HIGH-DYNAMIC-RANGE C+L BAND VARIABLE OPTICAL ATTENUATOR USING A TITLED ANGLE SHUTTER

摘要

A high-dynamic-range variable optical attenuator (VOA) using a movable shutter, which moves in a tilted-angle direction to the collimate fiber pair, is proposed, The VOA operates in the C+L band with the advantages low cost, high dynamic range of more than 50 dB, low insertion loss of 0.8 dB, low wavelength-dependent loss (WDL), and low polarization-dependent loss of ±0.4 dB and 0.4 dB, respectively, with attenuation of 50 dB. A compact size of 5.0 × 1.5×1.5 cm is obtained.