780nm Polarization-Maintaining (PM) In-Line Variable Optical Attenuator

780nm Polarization-Maintaining (PM) In-Line Variable Optical Attenuator

This 780nm Polarization-Maintaining (PM) In-Line Variable Optical Attenuator provides low insertion loss, high attenuation range, and continuously adjustable control with excellent reliability and stability. Designed specifically for operation at 780 nm with a ±50 nm bandwidth, it ensures precise optical power management with high return loss and polarization extinction ratio.

Ideal for optical communications, fiber sensing, fiber lasers, and amplifier systems, the attenuator supports a wide operating temperature range and high power handling. Its compact design and PM fiber compatibility make it suitable for polarization-sensitive applications. Custom configurations including fiber type, connector style, and cable length are available to meet specific system requirements.

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Description

Features & Applications
Product Features Applications
Low Insertion Loss Optical Communications / Instrumentation
High, Continuously Variable Attenuation Fiber Sensing
High Reliability and Stability Fiber Lasers / Optical Amplifiers
Specifications
Parameter Unit Value
Operating Wavelength nm 780
Operating Bandwidth nm ±50
Attenuation Range dB 0.6 ~ 60
Insertion Loss dB ≤ 0.6
Return Loss dB ≥ 50
Extinction Ratio dB ≥ 18
Connector Type — FC/APC or Others
Fiber Type — PM780-HP or Others
Operating Temperature °C 0 ~ +70
Storage Temperature °C -40 ~ +85
Maximum Optical Power mW 300
Package Dimensions mm 26 x 18 x 8
  • Temperature measurement environment: 25℃;
  • The above data do not include connectors. If connectors are added, the insertion loss will increase by 0.3 dB, the return loss will decrease by 5 dB, and the extinction ratio will decrease by 2 dB. By default, the slow axis of the fiber is aligned with the Key.
Package Dimensions

Ordering Information
Model Wavelength Fiber Type Connector Fiber Length
PMVOA 780nm PM780-HP N=None 05=0.5m
850nm PM1310 FP=FC/PC 10=1.0m
1310nm PM1550 FA=FC/APC 15=1.5m
1550nm S=Others S=Others S=Others
S=Others

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