Low power consumption 4-channel variable optical attenuator array based on planar lightwave circuit technique

Ren Mei-Zhen^{1, 2}, Zhang Jia-Shun^{1, †}, An Jun-Ming^{1, 2}, Wang Yue¹, Wang Liang-Liang¹, Li Jian-Guang¹, Wu Yuan-Da^{1, 2}, Yin XiaoJie¹, Hu Xiong-Wei¹

(color online) Fabricated 4-channel variable optical attenuator array when w is 21 μm: (a) insertion loss versus applied electrical power, (b) insertion loss versus applied voltage, (c) power consumption at an attenuation of 30 dB over 4 channels.