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) Experimental results: (a) power consumption at an attenuation of 30 dB versus w, (b) PDL at an attenuation of 20 dB versus w.