高功率隔离器和WDM混合（基于TGG） | 瑆创光学电子商店

High Power Isolator & WDM Hybrid (TGG Based) ensures optimal performance in fiber optic systems, featuring low insertion loss, high return loss, and notable stability and reliability. It's ideal for use in fiber lasers, testing instruments, and medical equipment, offering enhanced functionality and performance in these applications.
Features Low Insertion Loss  High Return Loss High Stability & Reliability	Applications Fiber Laser Testing Instrument  Medical Equipment

 

Specifications

Parameters		Unit	Value
Signal  Channel	Wavelength Range	nm	1064, 1030
	Max. Insertion Loss at 23℃	dB	1.2
	Min. Signal Reversed Isolation, λc ±10nm at 23℃	dB	25
	Min. Isolation (Com to Pass @Ref band wavelength)	dB	30
Reflection  Channel	Wavelength Range	nm	960-990
	Max. Insertion Loss at 23℃	dB	0.8
	Min. Isolation (Com to Ref @Pass band wavelength)	dB	15
Min. Extinction Ratio at 23℃ (PM Fiber Type, Signal/Pump Route)		dB	20/18
Max. Polarization Dependent Loss at 23℃ (SM Fiber Type)		dB	0.15
Min. Return Loss at 23℃		dB	50
Max. Optical Power (CW)		W	1, 2, 5, 10, 20 or Specified
Max. Peak Power for ns Pulse		kW	10 or Specified
Max. Tensile Load		N	5
Package Dimension		mm	64x28x26
Operating Temperature		℃	+10~+50
Storage Temperature		℃	0~+60

With connectors, the Max. handling power is 1W only, IL is 0.3dB higher, RL is 5dB lower, and ER is 2dB lower.  

Connector key is aligned to slow axis.

 

Package Dimensions

         

 

                       Signal Route: Pass → Com                                                                                                                       Signal Route: Com → Pass  

                                                                                                                                                                                                                                                                                                                 Pump Route: Ref → Com                                                                                                                          Pump Route: Ref → Com                                 

Ordering Information

STHPMIWDM-①①①①-②③④-⑤⑤⑤-⑥⑥⑥-⑦⑧-⑨-⑩⑩⑩-⑪⑪⑫⑫ (PM Fiber Type)

ST HPIIWDM-①①①①-②③④-⑤⑤⑤-⑥⑥⑥-⑦⑧-⑨-⑩⑩⑩-⑪⑪⑫⑫ (SM Fiber Type)

①①①①	- Wavelength:	0698=T1064nm / R980nm, 0398=T1030nm/R980nm, SSSS=Specified
②	- Stage:	S=Single-core
③	- Pump Type:	F=Forward Pump, B=Backward Pump
④	- Working Axis:	B=Both axis working, F=Fast axis blocked, N=Non-PM
⑤⑤⑤	- Fiber Type (Com & Pass):	003=PM980, 004=Hi1060, SSS=Specified
⑥⑥⑥	- Fiber Type (Ref):	003=PM980, 004=Hi1060, SSS=Specified
⑦	- Package Dimensions:	0=64x28x26mm
⑧	- Pigtail Type:	0=bare fiber, 1=900μm loose tube
⑨	- Fiber Length:	0.8=0.8m, 1.0=1m, S=Specified
⑩⑩⑩	- Connector Type:	0=FC/UPC, 1=FC/APC, 2=SC/UPC, 3=SC/APC, N=None, S=Specified
⑪⑪	- Average Power:	00=300mW, 01=1W, 02=2W, 05=5W, 10=10W, 20=20W, SS=Specified
⑫⑫	- Peak Power:	00=Continuous Wave, 01=1kW, 02=2kW, 10=10kW, SS=Specified

Q:What is Hybrid Fiber Components of Fiber Optics?
A:Hybrid Fiber Components in the context of fiber optics refer to components or systems that combine different types of fibers or different technologies to achieve specific

 

Q:What is High Power Isolator & WDM Hybrid (TGG Based),Isolator & Tap & Bandpass Filter (TGG Based) ,High Power Isolator & Tap & WDM & Bandpass Filter Hybrid？

A:These devices are specialized components used in fiber optic systems, each designed to perform specific functions while handling high power levels. Here's a breakdown of each:

1. High Power Isolator & WDM Hybrid (TGG Based):

    - High Power Isolator: This component allows light to travel only in one direction, protecting laser sources from destabilizing feedback. It's designed to handle high power levels, making it suitable for high-power laser applications.

    - WDM (Wavelength Division Multiplexing) Hybrid: This part of the device combines or separates multiple wavelength channels, optimizing bandwidth and data transmission in fiber optic networks. It's particularly useful in systems where multiple wavelengths are used for transmitting data over the same fiber.

    - TGG Based: Indicates the use of Terbium Gallium Garnet (TGG) crystals, known for their high magneto-optical properties, essential in high-power isolators for minimizing optical losses and maintaining beam quality.

2. Isolator & Tap & Bandpass Filter (TGG Based):

    - Isolator: Prevents back reflections and feedback in fiber optic systems, ensuring stable operation of laser sources and protecting against signal distortions.

    - Tap: Allows a small portion of the light signal to be diverted or 'tapped' from the main path. This is useful for monitoring signal power in the system without interrupting the main transmission.

    - Bandpass Filter: Selectively allows a specific range of wavelengths to pass while blocking others. This is crucial in applications where only certain wavelengths are desired for transmission or analysis.

    - TGG Based: Implies the use of TGG crystals, enhancing the device's capability to manage high power levels effectively while maintaining signal integrity.

3. High Power Isolator & Tap & WDM & Bandpass Filter Hybrid:

    - A comprehensive optical device that integrates all the functionalities of an isolator, tap, WDM, and bandpass filter.

    - Designed to handle high power levels, suitable for robust and complex fiber optic systems where precise control over light direction, power monitoring, wavelength multiplexing, and selective wavelength transmission are needed.

    - The integration of these components into a single hybrid unit simplifies system design and enhances performance, making it a versatile solution for advanced optical applications.

 

Each of these components plays a vital role in managing and controlling light in fiber optic systems, ensuring high performance, reliability, and efficiency in telecommunications, data transmission, and various industrial and scientific applications.

 

Q:What is Faraday Based and TGG Based？

A:"Faraday Based" and "TGG Based" refer to the materials and the underlying physical principles employed in certain optical devices, particularly in the context of optical isolators. Here's a breakdown of each:

1. Faraday Based (Faraday Isolators):

    - Principle: Faraday isolators use the Faraday effect, a phenomenon where the polarization plane of light is rotated when the light beam passes through a material under a strong magnetic field. The rotation is non-reciprocal, meaning it doesn't reverse when the direction of light propagation is reversed.

    - Construction: These isolators typically consist of a Faraday rotator (made of a magneto-optic material like Yttrium Iron Garnet (YIG) or Terbium Gallium Garnet (TGG)) and polarizers. The magnetic field applied to the Faraday rotator causes the polarization plane of the light passing through it to rotate.

    - Function: The non-reciprocal rotation ensures that light can pass in one direction while light coming in the opposite direction gets deflected or absorbed, protecting sensitive equipment like lasers from back reflections.

2. TGG Based (Terbium Gallium Garnet Based):

    - Material: TGG stands for Terbium Gallium Garnet, a magneto-optical crystal used in high-performance Faraday rotators and isolators.

    - Properties: TGG has excellent magneto-optical properties, providing high Verdet constant (a measure of the strength of the Faraday effect), low optical losses, and high thermal conductivity. These properties make it an ideal material for high-power laser applications where minimizing optical losses and managing thermal loads are crucial.

    - Applications: Devices that are TGG based are typically employed in high-power laser systems where stringent control over light directionality and polarization is required. They offer high isolation and low insertion loss, making them suitable for sensitive and high-precision optical applications.

 

In summary, "Faraday Based" refers to devices that utilize the Faraday effect to control the direction of light propagation, while "TGG Based" specifies the use of Terbium Gallium Garnet material in the construction of these devices, offering high performance in terms of isolation, thermal management, and optical clarity.

Q:What is Pass Bandwidth and  Stop Bandwidth?

A:Pass Bandwidth and Stop Bandwidth are terms typically used in the context of signal processing and telecommunications, particularly when describing the characteristics of filters. Here's what each term means:

1. Pass Bandwidth (or Passband):

    - The range of frequencies or wavelengths that a filter allows to pass through with minimal attenuation.

    - In an optical context, if you have a filter with a passband of 500-700nm, it means that light within this wavelength range will effectively pass through the filter, while light outside this range will be significantly attenuated or blocked.

    - The width of the passband can be narrow or wide, depending on the design and purpose of the filter. A wider passband allows more frequencies or wavelengths through, while a narrower passband is more selective.

 

2. Stop Bandwidth (or Stopband):

    - The range of frequencies or wavelengths that a filter significantly attenuates or blocks.

    - This is the opposite of the passband. If light or a signal falls within the stopband of a filter, it will be prevented from passing through, or its intensity will be significantly reduced.

    - The effectiveness of a stopband is often measured in terms of how much it attenuates the signal, with greater attenuation meaning a more effective stopband.

 

Filters are fundamental components in many systems, controlling the spectral composition of signals or light. The design and implementation of passbands and stopbands are crucial for the performance of these systems, ensuring that only the desired frequencies or wavelengths are allowed to pass, while undesired ones are blocked.

 

Q:What does Operating Wavelength Range do？

A:The Operating Wavelength Range of a device or system, especially in the context of optical and photonic systems, refers to the range of wavelengths over which the device or system can effectively operate or perform its function with acceptable efficiency and performance. This term is crucial in various fields, including telecommunications, fiber optics, laser systems.

1. Fiber Optic Communications: In fiber optics, the operating wavelength range specifies the range of light wavelengths over which the fiber exhibits acceptable signal attenuation and dispersion characteristics. This is vital because certain types of optical fiber are optimized for specific wavelength ranges, such as the 1550 nm range for long-distance communication in single-mode fibers.

2. Optical Filters and Coatings: For optical filters (like bandpass, longpass, shortpass) and coatings (like anti-reflective coatings), the operating wavelength range indicates the range of wavelengths over which the filter or coating meets its specified performance. For instance, a bandpass filter might be designed to transmit light only within a narrow wavelength range while blocking or reflecting wavelengths outside that range.

3. Laser Systems: Lasers have a specific operating wavelength range that indicates the range of wavelengths they can emit. This range is determined by the laser medium (like Nd:YAG, CO2, or semiconductor materials) and the laser cavity design. The operating wavelength is crucial for applications like cutting, engraving, medical treatments, and scientific research.

4. Sensors and Detectors: For sensors and detectors, the operating wavelength range specifies the range of wavelengths the device can detect or measure effectively. For instance, some photodetectors are designed to be sensitive to a specific portion of the electromagnetic spectrum, such as infrared, visible, or ultraviolet light.

 

Q:What does Insertion loss mean?

A:Insertion loss refers to the loss of signal power resulting from the insertion of a device in a transmission line or optical fiber and is usually expressed in decibels (dB). When a signal passes through any electronic device or a transmission medium, some of its power is lost due to various reasons like absorption, scattering, reflection, and material imperfections.

In the context of electronics and signal processing, insertion loss measures how much the signal has weakened after passing through a filter, cable, connector, or other network component. A lower insertion loss implies that the device has a better performance, meaning it allows more of the signal to pass through with less attenuation.

In the context of optical fibers and systems, insertion loss can refer to the loss of signal power resulting from the insertion of components such as connectors, splices, and fiber length.

It's important in system design and testing to ensure that the total insertion loss does not exceed a certain level to maintain the quality and integrity of the signal or to meet power budget requirements.

Q:What is Extinction Ratio?

A:The Extinction Ratio is a term commonly used in the fields of optics and telecommunications, especially when discussing the performance of optical components like modulators and switches, as well as in fiber optic communications. It is a measure of the effectiveness of a device in distinguishing between its "on" (light) and "off" (dark) states. Here's a more detailed explanation:

1. In Optical Communications: Extinction Ratio pertains to the ratio of the optical power output when the light source is on (Pon) to the optical power output when the light source is off (Poff). It's usually expressed in decibels (dB) and can be calculated using the formula:

 

A higher extinction ratio indicates a clearer distinction between the on and off states, leading to less ambiguity in signal interpretation, reduced error rates, and overall better performance in digital communication systems.

2. In Optical Components: For components like modulators, which are used to encode information onto a light beam, the extinction ratio measures the contrast between the maximum and minimum optical power levels (representing digital '1' and '0', respectively). In this context, a high extinction ratio is crucial for maintaining signal integrity, as it ensures that the '1's and '0's are distinctly recognizable by the receiving end of the communication system.

3. Importance in System Performance: The extinction ratio is an important parameter in digital optical communication systems because it affects the bit error rate (BER). A low extinction ratio can lead to higher bit error rates as the receiver might find it difficult to distinguish between the '1' and '0' states. Therefore, maintaining a high extinction ratio is essential for the reliability and efficiency of optical communication systems.

 

In summary, the extinction ratio is a key performance metric in optical systems, indicating the ability of a device to clearly differentiate between its on and off states, which is crucial for the accuracy and reliability of data transmission in fiber optic networks.

 

Q:What is Return Loss (input/output)?

A:Return Loss, in the context of telecommunications and signal transmission, refers to the measure of power reflected or lost when a signal is transmitted into a device or transmission line. It's a parameter used to describe how well a device or a line is matched to the source impedance. Return Loss can be considered for both input and output of a device:

1. Input Return Loss: This refers to the power that is reflected back towards the source when a signal encounters a device or a transmission line. This reflection usually occurs due to impedance mismatches at the input of the device or line. A high Input Return Loss value is desirable as it indicates a low amount of power is being reflected and, consequently, a better impedance match.

2. Output Return Loss: Similarly, this refers to the power that is reflected back into a device or transmission line at its output. It's an indication of how well the output of the device or line is matched to the load impedance it's driving. As with Input Return Loss, a higher Output Return Loss value is preferable as it signifies a low level of reflected power and a good impedance match.

Return Loss is usually expressed in decibels (dB) and can be calculated using the formula:

 

or, equivalently,

 

Here, Pincident is the power of the incident (incoming) signal, and Preflected is the power of the signal that is reflected back.

A few key points about Return Loss:

- A higher Return Loss value indicates a better match and less signal reflection. For example, a Return Loss of 20 dB is better than 10 dB.

- In systems where maintaining signal integrity is crucial (like high-frequency communication systems), achieving a high Return Loss is important to minimize signal degradation due to reflections.

- Return Loss is related to another parameter called Voltage Standing Wave Ratio (VSWR), which is also used to measure impedance mismatches and signal reflections.

 

Understanding and optimizing Return Loss is essential in the design and operation of various electronic systems, particularly in telecommunications and signal transmission, to ensure efficient power transfer and minimal signal degradation.

 

Q:What does Polarization Dependent Loss mean?

A:Polarization Dependent Loss (PDL) is a key parameter in the field of optics, particularly in fiber optic communications and photonic systems. It refers to the variation in the loss of a light signal due to the polarization state of the light. In essence, PDL measures the difference in transmission loss between the most and the least transmitted polarization states through an optical component or a fiber.

Here's a breakdown of the concept:

1. Polarization of Light: Light is an electromagnetic wave, and polarization describes the orientation of the electric field vector of the light wave. In fiber optics, light can have different polarization states, such as linear, circular, or elliptical polarization.

2. Dependence of Loss on Polarization: Ideally, an optical component (like a fiber, coupler, or filter) should treat all polarization states the same. However, imperfections, asymmetries, or design specifics can lead to different losses for different polarization states. This discrepancy is what we refer to as Polarization Dependent Loss.

3. Impact in Optical Systems: PDL is particularly significant in systems where the polarization state can vary or is not well controlled. High PDL can lead to signal degradation, especially in systems that rely on consistent transmission characteristics, such as dense wavelength division multiplexing (DWDM) systems.

4. Quantifying PDL: PDL is typically expressed in decibels (dB) and is calculated as the difference in transmission loss between the polarization state that experiences the highest loss and the state that experiences the lowest loss:

 

where  L_max is the loss at the polarization state with the maximum loss, and L_min is the loss at the polarization state with the minimum loss.

5. Managing PDL: In high-performance optical systems, managing and minimizing PDL is crucial. This can involve careful component selection, precise control of the manufacturing process, and the use of polarization-maintaining fibers or polarization diversity schemes.

 

In summary, PDL is an important factor in the performance of optical systems. It indicates how sensitive an optical component or system is to the polarization state of the light, and a high PDL can adversely affect system performance, especially in applications requiring high precision or in systems where the state of polarization can vary unpredictably.

 

Q:What is Transmission Wavelength?

A:Transmission wavelength refers to the distance over which a wave's shape (its form and amplitude) repeats itself in the context of electromagnetic waves, such as those used in radio, television, and data communication. It's a crucial concept in various fields, including telecommunications, physics, and engineering. Here are some key points to understand about transmission wavelength:

1. Definition: The wavelength of a signal is the distance between two consecutive points that are in phase. This means points that have the same displacement and motion relative to a medium, like two consecutive crests or troughs of a wave.

2. Relation to Frequency: Wavelength is inversely proportional to the frequency of the wave, and this relationship is described by the equation, where is the speed of the wave through the medium. For electromagnetic waves in a vacuum, is the speed of light (approximately meters per second).

The chart above illustrates the relationship between frequency and wavelength for electromagnetic waves, based on the equation, where is the wavelength, is the speed of light, and is the frequency.

3. Spectrum and Applications: Different wavelengths (and therefore frequencies) are used for different types of communications. For instance:

   - Radio waves can have very long wavelengths (from 1 meter to 1000 meters or more), suitable for broadcasting over long distances.

   - Microwaves have shorter wavelengths and are used for point-to-point communication systems and for satellite communications.

   - Infrared, visible light, and ultraviolet light have even shorter wavelengths and are used in various applications, including fiber-optic communication, where data is transmitted over long distances at high speeds.

4. Bandwidth and Data Capacity: In optical communications (like fiber optics), the transmission wavelength is crucial because different wavelengths can be used simultaneously to carry different signals, a technique known as Wavelength-Division Multiplexing (WDM). This significantly increases the capacity of a system to carry data.

5.Propagation Characteristics: The wavelength of a signal also affects its propagation characteristics, like how it interacts with different materials, how it is absorbed, and how it reflects or refracts. This is why different wavelengths are used for different applications; for example, certain wavelengths are better for underwater communication, while others are better for open-air or space communications.

 

In summary, the transmission wavelength is a fundamental property of waves that impacts how signals are transmitted, received, and processed in various communication systems. It's closely tied to the frequency of the signal and determines many of the signal's propagation and interaction characteristics.

 

Q:What is Reflection Wavelength？

A:Reflection Wavelength is the specific wavelength or range of wavelengths that are reflected by a medium or device, like a mirror or a filter, while other wavelengths pass through or are absorbed. This property is crucial in optical applications to control and manipulate light paths, enhancing the performance of systems such as sensors, lasers, and communication networks.

 

Q:What is Channel Bandwidth?

A:Channel bandwidth refers to the range of frequencies that a communication channel can transmit. It is a key concept in telecommunications and signal processing, representing the capacity of a channel to carry information.

 

 

The chart above visualizes the concept of channel bandwidth. In this example:The bandwidth of the channel is represented as the range of frequencies between 20 kHz and 40 kHz, giving a total bandwidth of 20 kHz.The area shaded in light blue indicates the range of frequencies that the channel can carry.The signal presence is indicated by the height of the blue area; it's either present (1) or not present (0), representing a simple on/off signal for illustrative purposes.

The concept can be better understood through a few key points:

Frequency Range: Bandwidth is often measured as the difference between the highest and the lowest frequencies in a continuous set of frequencies. For instance, if a channel can carry signals with frequencies from 20 Hz to 20 kHz, its bandwidth is 20 kHz - 20 Hz = 19.98 kHz.

Data Transmission Rate: In digital communications, the bandwidth of a channel is related to the rate of data transmission. According to the Nyquist theorem, the maximum data rate (in bits per second) that can be transmitted over a noiseless channel is twice the bandwidth of the channel (in Hz), assuming each signal change (baud) carries one bit of information.

Signal Processing: In signal processing, bandwidth is the width of the range of frequencies that an electronic signal occupies on a given transmission medium. Different signals (like radio, TV, and internet data) require different bandwidths.

Network Performance: In networking, bandwidth is often used to refer to the capacity of a network connection, though it's technically different from speed. Bandwidth indicates the maximum amount of data that can be transferred over a network path in a fixed amount of time, usually measured in megabits per second (Mbps) or gigabits per second (Gbps).

Bandwidth Limitations: The bandwidth of a channel can be affected by various factors, including the medium's physical properties (like fiber optics vs. copper), signal interference, and the technology used in transmission and reception.

 

Understanding channel bandwidth is crucial for designing and managing communication systems, as it directly impacts the quantity and quality of information that can be transmitted over a channel.

 

Q:What does Channel Flatness mean?

A:Channel flatness refers to a measure of how uniformly a communication channel or system transmits different frequencies within a specified bandwidth. It's an important characteristic in many communication systems, especially those dealing with a wide range of frequencies, like RF (radio frequency) communication systems, audio systems, and certain wireless communication technologies.

 

Here's what you need to know about channel flatness:

Uniformity of Response: Channel flatness is essentially about how consistently a channel or system transmits signals across its entire frequency range. A perfectly flat channel would transmit all frequencies with equal power, meaning the channel does not preferentially attenuate or amplify any frequency within its operational bandwidth.

Measurement and Representation: Channel flatness is usually measured in decibels (dB) and often graphed as a frequency response curve, showing the gain or loss of the system at different frequencies. A completely flat curve would indicate perfect channel flatness.

Impact on Performance: Non-uniformities or peaks and dips in the channel's frequency response can lead to various issues, such as distortion of the signal, unequal signal strength at different frequencies, or certain frequencies being lost or attenuated. In data communication, this can result in data loss or the need for additional error correction and compensation measures.

In Audio Systems: In audio systems, channel flatness is crucial for sound quality. A non-flat response can color the sound, leading to an inaccurate reproduction of the audio signal. For high-fidelity audio systems, a flat response is often desired to ensure that all frequencies are equally represented.

In RF and Wireless Communications: For RF and wireless systems, channel flatness is important for ensuring that all parts of the signal spectrum are transmitted with equal strength. This is particularly important in systems using complex modulation schemes or multiple frequency bands, where non-uniformities can lead to interference or data loss.

Challenges and Compensations: Achieving perfect channel flatness is challenging due to physical limitations, component imperfections, and environmental factors. Therefore, systems often incorporate equalization and filtering techniques to compensate for known non-uniformities in the channel response.

 

In summary, channel flatness is a measure of the consistency with which a channel transmits different frequencies. It's an important parameter in the design and assessment of many types of communication systems, impacting the fidelity and efficiency of signal transmission.

 

Q:What does Power Handling (CW) use for？

A:Power Handling (CW), in the context of optical components, refers to the maximum continuous optical power that a device can handle or operate under without degrading its performance or reliability. It's essential for ensuring the longevity and stability of optical devices in systems where they are exposed to continuous light sources, such as in telecommunications or laser applications.

 

Q:What does Transmission Isolation mean?

A:Transmission Isolation in the context of filters (like WDM, DWDM, CWDM) refers to the ability of the filter to prevent or significantly attenuate unwanted wavelengths or signals from passing through while allowing the desired wavelength range to transmit. This ensures that only the targeted signals are transmitted, enhancing the clarity and quality of the communication channel or system.

 

Q:What is Rotation Angle Tolerance?

A:Rotation Angle Tolerance is a term commonly used in various fields like manufacturing, engineering, and computer vision to describe the acceptable range of angular deviation from a specified orientation. It defines how much an object, component, or feature can rotate from its intended position before it is considered out of specification or unacceptable.

 

Q:What is Axis Alignment?

A:Axis alignment generally refers to the process of adjusting or orienting an object, system, or components so that their axes are in a specified position relative to each other or to a reference.

Axis alignment is a critical procedure in many technical and engineering fields. Proper alignment ensures that systems operate correctly, efficiently, and safely, and it often requires precise measurement and adjustment tools.

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