Hybrid grism-lens device for diffraction grating demultiplexers

Hsiao-Chin Lan; Chao-Chia Cheng; Chih-Ming Wang; Mao-Jen Wu; Jenq-Yang Chang

doi:10.1117/1.2278470

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1 August 2006 Hybrid grism-lens device for diffraction grating demultiplexers

Hsiao-Chin Lan, Chao-Chia Cheng, Chih-Ming Wang, Mao-Jen Wu, Jenq-Yang Chang

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Optical Engineering, 45(8), 085002 (2006). https://doi.org/10.1117/1.2278470

Abstract

A hybrid grism lens, which integrates an off-axis diffractive grating and an on-axis refractive lens onto a prism structure, is developed. The proposed grism lens can simplify the setup of grating-based wavelength-division multiplexing (WDM) device owing to the dual-functional characters combined within only one element. The 100-GHz dense WDM (DWDM) device based on the grism lens is designed with an insertion loss of 2.91±0.53 dB and a crosstalk of 58.02 dB. The tolerance analysis, the allowable grating tilt angle of ±0.5 deg and fiber displacement of ±1 µm, shows that the proposed structure could be practically applied to the grating-based demultiplexers.

©(2006) Society of Photo-Optical Instrumentation Engineers (SPIE)

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Hsiao-Chin Lan, Chao-Chia Cheng, Chih-Ming Wang, Mao-Jen Wu, and Jenq-Yang Chang "Hybrid grism-lens device for diffraction grating demultiplexers," Optical Engineering 45(8), 085002 (1 August 2006). https://doi.org/10.1117/1.2278470

Published: 1 August 2006

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