Chinese Optics Letters, 2018, 16 (7): 070602, Published Online: Jul. 19, 2018  

Demonstration of a bandwidth-tunable optical passband filter with tunable attenuation Download: 600次

Author Affiliations
1 Wuhan National Lab for Optoelectrics, Huazhong University of Science and Technology, Wuhan 430074, China
2 Accelink Technologies Co., Ltd., Wuhan 430205, China
Abstract
A bandwidth-tunable optical passband filter with tunable attenuation is proposed. The filter, composed of a transmission liquid crystal array and high-resolution diffraction grating, was successfully demonstrated based on the compact spatial light design. Experimental results showed that the bandwidth, wavelength, and attenuation could be tuned by controlling the voltage applied on the liquid crystal array. The insertion loss was less than 3 dB; the attenuation tuning range was from 0 to 15 dB. The bandwidth tuning range was from 50 to 5000 GHz, which covered the full C band. The filter can meet the technical requirements of colorless-directionless-contentionless-flexible reconfigurable optical add/drop multiplexer.

Zhilin Yuan, Wei Li, Rui Yang, Liu Yang, Fan Wang, Jinping Guo, Lihong Tang, Qianggao Hu, Zuowei Xu. Demonstration of a bandwidth-tunable optical passband filter with tunable attenuation[J]. Chinese Optics Letters, 2018, 16(7): 070602.

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