Materials, Photonic Devices, and Sensors

Wavelength selective switch with superflat passbands based on a microelectromechanical system micromirror array

[+] Author Affiliations
Guangming Cheng

South China Normal University, School of Information and Optoelectronic Science and Engineering, Laboratory of Nanophotonic Functional Materials and Devices, Guangzhou 510006, China

Banghong Guo

South China Normal University, School of Information and Optoelectronic Science and Engineering, Laboratory of Nanophotonic Functional Materials and Devices, Guangzhou 510006, China

Yunfei Zhou

South China Normal University, School of Information and Optoelectronic Science and Engineering, Laboratory of Nanophotonic Functional Materials and Devices, Guangzhou 510006, China

Guangzhou Yongda Optical Communication Technology Development Co., Ltd., Guangzhou 511400, China

Shi Chen

Guangzhou Yongda Optical Communication Technology Development Co., Ltd., Guangzhou 511400, China

Zhenhua Li

Huawei Technologies Co. Ltd., Shenzhen 518129, China

Opt. Eng. 53(12), 127102 (Dec 09, 2014). doi:10.1117/1.OE.53.12.127102
History: Received September 17, 2014; Accepted November 7, 2014
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Abstract.  We propose and experimentally demonstrate an industrial wavelength selective switch (WSS) architecture based on a microelectromechanical system (MEMS) micromirror array. An anisotropic uniaxial crystal and a half-wave plate are employed as the polarization-diversity solution to reduce the polarization-dependent loss (PDL) of the WSS, and an achromatic lens composed of a positive lens and a negative lens is adopted to eliminate chromatic aberration. Experimental results show that it is possible to select and switch any wavelength channel from an input port to any output port through a two-stage beam steering process. The measured insertion loss and PDL are 4.78 and 0.5 dB, respectively. Benefiting from the customized MEMS micromirror array with a high fill factor of 96%, the 3 dB bandwidth is about 90 GHz. The results also show that the proposed WSS possesses uniform and superflat passbands for different wavelength channels.

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© 2014 Society of Photo-Optical Instrumentation Engineers

Citation

Guangming Cheng ; Banghong Guo ; Yunfei Zhou ; Shi Chen and Zhenhua Li
"Wavelength selective switch with superflat passbands based on a microelectromechanical system micromirror array", Opt. Eng. 53(12), 127102 (Dec 09, 2014). ; http://dx.doi.org/10.1117/1.OE.53.12.127102


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