An ultra-compact variable optical attenuator based on slow light photonic crystal waveguide with thermooptic effect is demonstrated. Along with power consumption of as low as 30.7 mW, a variable attenuation range of 10 dB is experimentally achieved by shifting the transmission spectrum at about 4.6 nm. The length of the proposed device is only 20 μm.
© 2013 Chinese Optics Letters
Qiang Zhao, Kaiyu Cui, Xue Feng, Yidong Huang, Yongzhuo Li, Dengke Zhang, and Wei Zhang, "Ultra-compact variable optical attenuator based on slow light photonic crystal waveguide," Chin. Opt. Lett. 11, 031301- (2013)