Fiber Isolators & Circulators

1030nm High Power Free Space 5mm Faraday Optical Isolator CSRAYZER_HIO-5-1030-HP-113X54X54-SD

1030nm High Power Free Space 5mm Faraday Optical Isolator CSRAYZER_HIO-5-1030-HP-113X54X54-SD

CSRayzer offers different clear apertures and wavelength range free space rotator and isolator, also called Faraday rotator and isolator, which is a device that changes the polarization state of light based on the ...

Sold by: CSRayzer Optical Technology Ships from: China
Specifications
Type Of The Device: Isolator
Operating Wavelength: 1030 nm
Max Power: 50 W
Min Isolation: 30 dB
Transmission@λc: ≥92 %
635nm TGG Based Optical Isolator

635nm TGG Based Optical Isolator

The TGG Based 635nm Optical Isolator is a high-quality device designed to suppress back reflection and back scattering in lasers, transmitters, and other fiber optic communication equipment. With its low insertion ...

Sold by: DK Photonics Ships from: China
Specifications
Type Of The Device: Isolator
Operating Wavelength: 635 nm
Max Power: 0.1 W
Min Isolation: 25 dB
Operating Wavelength Range: ±5 nm
980nm TGG Based Optical Circulator

980nm TGG Based Optical Circulator

The TGG (Terbium gallium garnet) based 980nm optical circulator is a high-performance light-wave component designed to efficiently route incoming signals from Port 1 to Port 2 and incoming Port 2 signals to Port ...

Sold by: DK Photonics Ships from: China
Specifications
Type Of The Device: Circulator
Operating Wavelength: 980 nm
Max Power: 0.5 W
Min Isolation: 20 dB
Operating Wavelength Range: ±10 nm
1310nm Polarization Maintaining Isolator

1310nm Polarization Maintaining Isolator

The 1310nm Polarization Maintaining Isolator by DK Photonics is a state-of-the-art two-port micro-optic device crafted with PM panda fiber. This isolator is designed to guide optical light in one direction while ...

Sold by: DK Photonics Ships from: China
Specifications
Type Of The Device: Isolator
Operating Wavelength: 1310 nm
Max Power: 10 W
Min Isolation: 48 dB
Operating Wavelength Range: ±20 nm
C+L Band 3-Port Polarization Insensitive Optical Circulator

C+L Band 3-Port Polarization Insensitive Optical Circulator

Enhance your optical systems with the C+L Band 3-Port Polarization Insensitive Optical Circulator from DK Photonics. This compact and high-performance component efficiently routes incoming signals, ensuring low ...

Sold by: DK Photonics Ships from: China
Specifications
Type Of The Device: Circulator
Operating Wavelength: Not Specified
Max Power: 1 W
Min Isolation: 40 dB
Operating Wavelength Range: Operating Wavelength Range nm
1550nm Polarization Insensitive Isolator

1550nm Polarization Insensitive Isolator

1550nm Polarization Insensitive Isolator utilizes the Faraday Effect of Magneto-optical crystal, guiding optical light in one direction while eliminating back reflection and back scattering in the reverse direction ...

Sold by: DK Photonics Ships from: China
Specifications
Type Of The Device: Isolator
Operating Wavelength: 1550 nm
Max Power: 1 W
Min Isolation: 30 dB
Band Width: ±20 dB
1064nm High Power Polarization Independent Isolator-2W

1064nm High Power Polarization Independent Isolator-2W

The high power isolator series includes in-line type, beam expanded isolator, fiber in and free space out isolator and free space isolator etc. 1064nm High Power Polarization Independent Isolator is one of ...

Sold by: DK Photonics Ships from: China
Specifications
Type Of The Device: Isolator
Operating Wavelength: 1064 nm
Max Power: 2 W
Min Isolation: 28 dB
Operating Wavelength Range: ±5 nm
1064nm High Power Polarization Maintaining Isolator

1064nm High Power Polarization Maintaining Isolator

The High Power Isolator series products include high power isolator and high power collimator. The high power isolator series includes in-line type, beam expanded isolator, fiber in and free space out isolator and ...

Sold by: DK Photonics Ships from: China
Specifications
Type Of The Device: Isolator
Operating Wavelength: 1064 nm
Max Power: 20 W
Min Isolation: 30 dB
High Power Faraday Rotator and Isolator by DK Photonics

High Power Faraday Rotator and Isolator by DK Photonics

Faraday rotators play a crucial role in changing the polarization state of light as it travels through the device. The output polarization state is adjusted by 45 degrees relative to the input polarization. This ...

Sold by: DK Photonics Ships from: China
Specifications
Type Of The Device: Isolator
Operating Wavelength: 1064 nm
Max Power: Not Specified
Min Isolation: 30 dB
Clear Aperture: 2.8 mm
Ascentta Single Mode Polarization Insensitive Fiber Optic Circulator (532nm, 633nm, 785nm, 850nm)

Ascentta Single Mode Polarization Insensitive Fiber Optic Circulator (532nm, 633nm, 785nm, 850nm)

Ascentta, Inc. offers a range of compact and high-performance fiber optic circulators designed to transmit signals from one port to another simultaneously. These three-port circulators are widely used in optical ...

Sold by: Ascentta Ships from: United States
Specifications
Type Of The Device: Circulator
Operating Wavelength: 532 nm
Max Power: 0.15 W
Min Isolation: 21 dB
Insertion Loss (All SOP) Max.: 1.8 dB
Ascentta Polarization Maintaining (PM) Fiber Circulator (405nm)

Ascentta Polarization Maintaining (PM) Fiber Circulator (405nm)

Ascentta, Inc. offers a compact and high-performance three-port fiber optic circulator designed specifically for polarization-maintaining (PM) applications. This optical device efficiently transmits signals from ...

Sold by: Ascentta Ships from: United States
Specifications
Type Of The Device: Circulator
Operating Wavelength: 405 nm
Max Power: 0.03 W
Min Isolation: 20 dB
Insertion Loss (Fast Axis Block) (1→2, Or 2→3): 2.0 dB
Ascentta Polarization Dependent Free Space Circulator (532nm 635nm 780nm 850nm)

Ascentta Polarization Dependent Free Space Circulator (532nm 635nm 780nm 850nm)

The Polarization-Dependent 3-Port Circulator Core (TGG Type) by Ascentta Inc. is engineered for precise optical signal routing in demanding photonics applications. Designed to operate across key ...

Sold by: Ascentta Ships from: United States
Specifications
Type Of The Device: Circulator
Operating Wavelength: 532 nm
Max Power: 5 W
Min Isolation: 21 dB
Insertion Loss (23℃, All SOP*) (1→2, Or 2→3) Max: 0.6 dB
Ascentta Single Mode Polarization Insensitive Optical Circulator (635nm or 532nm, 780nm, 850nm)

Ascentta Single Mode Polarization Insensitive Optical Circulator (635nm or 532nm, 780nm, 850nm)

The TGG-type 3-port optical circulator by Ascentta, Inc., is a high performance device in a compact package. It enables light travels in one direction, i.e. from port 1 to port 2 and from port 2 to port 3. It ...

Sold by: Ascentta Ships from: United States
Specifications
Type Of The Device: Circulator
Operating Wavelength: 405 nm
Max Power: 0.03 W
Min Isolation: 20 dB
Insertion Loss (All SOP) (1→2, Or 2→3) Max.: 1.5 to 2.5 (wavelength dependent) dB
4-channel Circulator Array

4-channel Circulator Array

Many parameters are dependent on wavelength; see specification sheet for more details. Our visible spectrum circulator arrays can now have up to four channels! It is now even easier to install multiple circulators ...

Sold by: Ascentta Ships from: United States
Specifications
Type Of The Device: Circulator
Operating Wavelength: 532 nm
Max Power: 0.05 W
Min Isolation: 20 dB
Insertion Loss (fast Axis Blocked) (max): 1.8 to 2.5 (wavelength dependent) dB
Isolator Array (1310, 1480, 1550, 1590nm)

Isolator Array (1310, 1480, 1550, 1590nm)

Ascentta's Single-Mode Polarization-Insensitive Isolator Array is designed to optimize complex optical communication systems by preventing back reflections and minimizing internal losses across multiple channels. ...

Sold by: Ascentta Ships from: United States
Specifications
Type Of The Device: Isolator
Operating Wavelength: 1310 nm
Max Power: 0.3 W
Min Isolation: 25 dB
Channels: 2 or 3
Ascentta Isolator-WDM Hybrid (IWDM)

Ascentta Isolator-WDM Hybrid (IWDM)

The function of two components with the volume and price of one! Ascentta’s isolator and WDM hybrid is convenient and space-saving without sacrificing performance. High channel isolation, low polarization mode ...

Sold by: Ascentta Ships from: United States
Specifications
Type Of The Device: Other
Operating Wavelength: Not Specified
Max Power: 0.3 W
Min Isolation: Not Specified
Wavelength: 1480/1550, 1480/1590, 980/1550, or 980/1590 nm
Ascentta Isolator Hybrid: Tap Coupler + Isolator

Ascentta Isolator Hybrid: Tap Coupler + Isolator

Specs listed are for the single-stage version only. For dual-stage specs, review datasheet. With excellent operating parameters and precise, stable tap ratio, Ascentta’s Tap + Isolator hybrids are excellent ...

Sold by: Ascentta Ships from: United States
Specifications
Type Of The Device: Isolator, Other
Operating Wavelength: Not Specified
Max Power: 0.3 W
Min Isolation: 31 dB
Insertion Loss (signal): 0.8 dB (max)
Ascentta High Directivity Ultra-broadband 3-port Optical Circulator

Ascentta High Directivity Ultra-broadband 3-port Optical Circulator

Ascentta’s ultra-broadband circulators, covering 1290nm to 1620nm, already boast high directivity and return loss, each with minimum values of 50dB. However, we are always looking for ways to improve our ...

Sold by: Ascentta Ships from: United States
Specifications
Type Of The Device: Circulator
Operating Wavelength: Not Specified
Max Power: 0.3 W
Min Isolation: 20 dB
Operative Wavelength: 1290nm to 1620nm
High-Power High-Isolation Isolator

High-Power High-Isolation Isolator

The high-power high-isolation isolator (1064nm, 1030nm, 980nm, 915nm, 850nm, 808nm, 780nm) is a polarization-independent fiber component that allows all polarized light (not just the light polarized in a specific ...

Sold by: Lfiber Optic Limited Ships from: China
Specifications
Type Of The Device: Isolator
Operating Wavelength: 780 nm
Max Power: 10 W
Min Isolation: 55 dB
Peak Powe: 10kW, 20kW
High Power PM Optical Isolator

High Power PM Optical Isolator

The High Power PM Isolator (1310nm / 1550nm) from Lfiber is a premium optical component designed to suppress unwanted back reflections and feedback in high-power fiber optic systems. Built for robustness and ...

Sold by: Lfiber Optic Limited Ships from: China
Specifications
Type Of The Device: Isolator
Operating Wavelength: 1310 nm
Max Power: 20 W
Min Isolation: 28 dB
Peak Power: 10kW, 20kW
High Power PM Fiber Optical Isolator

High Power PM Fiber Optical Isolator

The high power PM fiber optical isolator (1064/1030/980 nm polarization-maintaining optical fiber isolator) is one of the most important passive components. The function of a PM optical isolator is to let a ...

Sold by: Lfiber Optic Limited Ships from: China
Specifications
Type Of The Device: Isolator
Operating Wavelength: 980 nm
Max Power: 10 W
Min Isolation: 25 dB
Min. Extinction Ratio At 23℃: 20

Did You Know?

Fiber isolators and fiber circulators are essential passive components in modern optical systems, ensuring signal integrity and enhancing performance. Fiber isolators are non-reciprocal devices that allow light to pass in only one direction, effectively preventing back-reflected light from reaching sensitive components like lasers. This protection is crucial in maintaining the stability and longevity of laser sources and optical amplifiers. On the other hand, fiber circulators are multi-port devices that direct light sequentially from one port to the next, enabling bidirectional communication over a single fiber. They are instrumental in advanced applications such as Dense Wavelength Division Multiplexing (DWDM) systems, optical add-drop multiplexing, and fiber-optic sensing. Both components are vital in high-speed communication networks, ensuring efficient signal routing and minimizing interference. Their integration into optical systems leads to improved performance, reduced noise, and enhanced reliability.

Frequently Asked Questions

An optical isolator contains a Faraday rotator, a component characterized by rotating input linear polarization by 45 degrees. It is important to note that the direction of polarization rotation is dependent on the orientation of the Faraday rotator but not on the light travel direction. In other words, if, for instance, the polarization is rotating clockwise relative to the propagation direction, in the reverse-propagation direction, the rotation will be counter-clockwise. At the input of an optical isolator there is a linear polarizer ensuring that only linearly polarized line enters the system. There is a second linear polarizer present at the exist that let’s through the light that is now rotated by 45 degrees relative to the input. If there is a back reflection from any subsequent optical components in the system, the light might be able to back enter from the exit polarizer and further rotate in the same direction by 45 degrees resulting in a 90 degree rotation relative the orientation of the entrance polarizer, which will block the light from passing through the system in the reverse direction.

Enhancing Optical Systems with Fiber Isolators and Circulators

Introduction

In the realm of fiber-optic communications, maintaining signal integrity and efficient routing is paramount. Fiber isolators and fiber circulators play pivotal roles in achieving these objectives, serving as fundamental components in various optical applications.

Fiber Isolators: Protecting Optical Integrity

Fiber isolators are designed to transmit light in a single direction while blocking any back-reflected light. This unidirectional flow is achieved through non-reciprocal optical elements, such as Faraday rotators, which rotate the polarization of light, allowing it to pass in one direction and attenuating it in the reverse.

The primary function of fiber isolators is to protect laser sources from back-reflections, which can cause instability, noise, or even damage. By preventing reflected light from re-entering the laser cavity, isolators ensure consistent output and prolong the lifespan of the laser.

Applications of fiber isolators include:

  • Laser Protection: Safeguarding lasers in optical communication systems.

  • Optical Amplifiers: Enhancing the performance of amplifiers by minimizing feedback.

  • Measurement Systems: Ensuring accurate readings by eliminating unwanted reflections.

Fiber Circulators: Enabling Bidirectional Communication

Fiber circulators are multi-port, non-reciprocal devices that direct light from one port to the next in a sequential manner. For instance, light entering port 1 exits through port 2; any light entering port 2 exits through port 3, and so on. This functionality allows for the separation and routing of signals traveling in opposite directions within a single fiber.

The unique properties of fiber circulators make them indispensable in complex optical systems. They enable:

  • Bidirectional Transmission: Facilitating two-way communication over a single fiber.

  • Wavelength Division Multiplexing (WDM): Allowing multiple wavelengths to be added or dropped in DWDM systems.

  • Optical Sensing: Enhancing the capabilities of fiber-optic sensors by directing signals appropriately.

Integration in Optical Systems

The integration of fiber isolators and circulators into optical networks leads to:

  • Improved Signal Quality: By minimizing reflections and crosstalk.

  • Enhanced System Reliability: Through the protection of sensitive components.

  • Efficient Network Design: Allowing for more compact and versatile configurations.

Conclusion

Fiber isolators and fiber circulators are vital components in the advancement of optical communication systems. Their ability to control light propagation ensures the protection of critical components and the efficient routing of signals. As optical networks continue to evolve, the importance of these devices in maintaining system integrity and performance cannot be overstated.