Polarization Maintaining Variable Optical Attenuator PM VOA Manually Adjustable

Features: Extremely wide continuous attenuation range and high adjustment precision

Solved problems/value: Maximum attenuation up to 60 dB in the 1310/1480/1550 nm and 980/1064 nm bands, and up to 50 dB in the 780/850 nm band. Combined with a precision mechanical knob, it allows test engineers or system architects to precisely control the injected optical power with extremely high resolution, completely preventing optical saturation or burnout of the front-end high-sensitivity receiver (Rx).

Features: Superior Polarization Extinction Ratio (ER) and Precise Slow-Axis Alignment

Solved Pain Points/Value: For wavelengths above 980 nm, the minimum polarization extinction ratio (ER) remains stable at 20 dB (Note: ER decreases by 2 dB with connectors). At the factory, the polarization-maintaining fiber and connector key are precisely aligned with the slow axis, completely blocking fast-axis light. This ensures that the polarization state does not undergo any distortion or rotation during light intensity adjustment, which is crucial for quantum secure communication.

Features: Ultra-low initial insertion loss and extremely high return loss (RL)

Solved Pain Points/Value: When tuned to zero attenuation, the maximum insertion loss in the 1310/1480/1550 nm bands is only 0.5 dB (Note: an increase of 0.3 dB with connectors). Simultaneously, it provides a minimum return loss of up to 55 dB (reduced by 5 dB with connectors), effectively suppressing back-reflected light interference with the front-end laser source and ensuring excellent optical isolation.

Features: Robust and compact mechanical design with high power handling capability

Pain points addressed/value: Featuring a robust metal box design, with dimensions as low as 26×18×8 mm or an ultra-compact 18×18×8 mm, it perfectly integrates into space-constrained test benches or equipment interiors. It can withstand a maximum optical power of 500 mW and maintains highly stable attenuation performance over a temperature range of -5 °C to 65 °C.