Demonstration of Asymmetric Wavelength Selective Switch Based on LCoS SLM for Optical Access Network

Chou, Hsi‐Hsir; Chen, Chia-Lun

doi:10.1109/icton.2019.8840184

Cited by 1 publication

(1 citation statement)

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“…Digital signal transmission tests were conducted at a transmission speed beyond 2.5 Gbps successfully. Progressing from our previous works in [19][20], we further report the proposed optical wavelength switch system's design consideration. The system performance evaluation, including system insertion loss, crosstalk, and data transmission tests in the multicasting scenarios, are analyzed.…”

Section: Introductionmentioning

confidence: 99%

Asymmetric Optical Wavelength Switch Based on LCoS-SLM for Edge Node of Optical Access Network

Chou

Chen

2021

IEEE Photonics J.

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A novel design of optical wavelength switch, based on an asymmetric switching architecture for edge node implementation, is presented in this paper. Compared to previous research for optical core transport network applications, the proposed work has a unique aspect to build dynamic multicasting and spectral equalization, vital functionalities for optical wavelength switch in the edge of optical access networks. An optical wavelength switch was experimentally implemented and evaluated in a 4x16 switching architecture to demonstrate the concept. This dynamic multicasting and spectral equalization were achieved by utilizing liquid crystal on a silicon spatial light modulator (LCoS-SLM) device. An optimal design of computer-generated holograms (CGHs) through an improved GS algorithm was used to perform the beam steering and wavelength switching. A variety of wavelength switching scenarios has been experimentally evaluated. The measurement results showed an average insertion loss of around -12.5 dB, and the calculated crosstalks were all less than -28 dB. Its applications in digital data transmissions were evaluated to achieve a transmission speed larger than 2.5 Gbps. The eye diagram measurement results showed that most wavelength switching scenarios have nearly bit-error-free transmission. The scenario includes the multicasting with spectral equalization within the proposed asymmetrical switching architecture.

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Section: Introductionmentioning

confidence: 99%