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Proceedings Paper

Demonstration of 1×32 LCOS-based wavelength selective switch
Author(s): Ying Chen; Xiao Chen; Yunshu Gao; Miao Tian; Ran Chen; Shan Wang; Genxiang Chen; Yiquan Wang
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Paper Abstract

In recent years, reconfigurable optical add drop multiplexers (ROADM) and multiple-dimensions optical cross-connection (OXC), as the essential devices of next-generation dynamic optical networks, have been attracted great interests by research institutions and relevant industry. 1×N Wavelength selective switches (WSSs) are one of the key components in current and next generation ROADM. Currently, WSS primarily rely on micro-electromechanical systems (MEMS) and liquid crystal on silicon spatial light modulators (LCOS-SLM) switches. LCOS-based WSSs have several advantages, including flexible spectrum coverage, adaptive alignment, and robustness. Based on a novel 2-f optical structure, we therefore propose 1×32 WSS system including a 1×32 fiber-coupling lenslet arrays, a collimating lens, a transmission grating, a cylindrical lens and a LCOS-SLM. By uploading the optimized phased holograms on the LCOS, we have successfully switched input signal with arbitrary wavelength in C-band into any output port. The output channel spacing can be adjusted flexibly and each port switches independently. Experimental results demonstrate the insertion loss is around 5~10dB and the switch crosstalk at 1550nm is -35dB. The 3dB-bandwidth of signal@100G is 40G.The research has established the theory and experiment foundation for the development of M×N WSS in future.

Paper Details

Date Published: 5 August 2015
PDF: 8 pages
Proc. SPIE 9619, 2015 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Optical Signal Processing, 96190N (5 August 2015); doi: 10.1117/12.2190651
Show Author Affiliations
Ying Chen, Minzu Univ. of China (China)
Xiao Chen, Minzu Univ. of China (China)
Yunshu Gao, Minzu Univ. of China (China)
Miao Tian, Minzu Univ. of China (China)
Ran Chen, Minzu Univ. of China (China)
Shan Wang, Minzu Univ. of China (China)
Genxiang Chen, Minzu Univ. of China (China)
Yiquan Wang, Minzu Univ. of China (China)


Published in SPIE Proceedings Vol. 9619:
2015 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Optical Signal Processing
Yi Dong; Chao Lu; Jian Wu; Zhaohui Li, Editor(s)

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