Lasers, Fiber Optics, and Communications

Multichannel mode conversion and multiplexing based on a single spatial light modulator for optical communication

[+] Author Affiliations
Song Nie, Song Yu, Shanyong Cai, Mingying Lan, Wanyi Gu

Beijing University of Posts and Telecommunications, State Key Laboratory of Information Photonics and Optical Communications, 10 Xitucheng Road, Beijing 100876, China

Opt. Eng. 55(7), 076108 (Jul 19, 2016). doi:10.1117/1.OE.55.7.076108
History: Received December 24, 2015; Accepted June 13, 2016
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Abstract.  A method is proposed to achieve multichannel mode conversion and multiplexing by dividing a single spatial light modulator into several blocks with the mode conversion pattern and blazed grating loaded on each block. The conversion patterns realize the precise excitation of higher order modes using combined amplitude and phase modulation. The blazed gratings bring together incident beams, so these beams can be coupled into few-mode fiber (FMF). In the experiment, four higher order modes are precisely excited and converge with a tilt angle. Through the simulation method, these beams can be coupled into FMF with small tilt angles (0.0344 deg for LP11 mode).

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Song Nie ; Song Yu ; Shanyong Cai ; Mingying Lan and Wanyi Gu
"Multichannel mode conversion and multiplexing based on a single spatial light modulator for optical communication", Opt. Eng. 55(7), 076108 (Jul 19, 2016). ; http://dx.doi.org/10.1117/1.OE.55.7.076108


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