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Home Fiber Optic Cables Accessories Fiber Attenuators Hot Polarization Maintaining Fiber Optic Attenuator | High Precision Fixed Attenuation for Telecom & Fiber Optic Systems

Polarization Maintaining Fiber Optic Attenuator | High Precision Fixed Attenuation for Telecom & Fiber Optic Systems

Polarization Maintaining Fiber Optic Attenuator | High Precision Fixed Attenuation for Telecom & Fiber Optic Systems

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Specifications

Description

A Polarization Maintaining Fiber Attenuator (PM Fiber Attenuator) is a specialized optical attenuator designed to reduce signal power in polarization maintaining (PM) fibers without disturbing the state of polarization (SOP). It’s used in systems where preserving polarization is critical, such as interferometry, coherent communication, or fiber optic sensing.

Specifications

Fiber Type: Polarization Maintaining (PM) Fiber
Attenuation: Fixed or variable; common fixed values: 1 dB, 3 dB, 5 dB, 10 dB, etc.
Wavelength: Typically 780 nm to 1650 nm (depending on application)
Connector Types: FC/APC, FC/PC, or others depending on system
Insertion Loss: Typically =0.8 dB (excluding attenuation)
Extinction Ratio (ER): High, typically >20 dB preserved
Return Loss: =50 dB
Operating Temperature: –40°C to +85°C
Power Handling: Varies; typically up to 300 mW or higher
Polarization Crosstalk: Very low, maintaining PM fiber’s polarization state
Durability: Mating cycles =1000

Features

Maintains polarization state: Unlike standard fiber attenuators, designed specifically for PM fiber to preserve the SOP.
Low insertion loss beyond attenuation value ensures minimal signal degradation.
Available in fixed or variable versions for flexible power management.
High extinction ratio preservation to keep the polarization integrity intact.
Suitable for narrow-band and broad-band PM fiber systems.

Ideal Uses

Fiber optic sensors where polarization stability affects measurement accuracy.
Coherent communication systems relying on stable polarization for signal demodulation.
Interferometric systems such as fiber optic gyroscopes and strain sensors.
Polarization-sensitive research and lab setups requiring precise power attenuation without disturbing SOP.

Why Choose This Product?

Critical for applications where polarization disturbance causes performance degradation.
Ensures accurate and stable optical power control without altering the polarization state.
Helps in testing and tuning PM fiber systems by providing controlled attenuation.
High-quality build ensures long-term reliability in sensitive optical setups.

Features

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Conditions:

New

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