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

Hybrid grism-lens device for diffraction grating demultiplexers

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

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

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 ± μm, shows that the proposed structure could be practically applied to the grating-based demultiplexers.

Original language	English
Article number	085002
Journal	Optical Engineering
Volume	45
Issue number	8
DOIs	https://doi.org/10.1117/1.2278470
State	Published - Aug 2006

Keywords

Blazed gratings
Demultiplexers
Grisms
Insertion loss

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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 ± μm, shows that the proposed structure could be practically applied to the grating-based demultiplexers.",

keywords = "Blazed gratings, Demultiplexers, Grisms, Insertion loss",

author = "Lan, {Hsiao Chin} and Cheng, {Chao Chia} and Wang, {Chih Ming} and Wu, {Mao Jen} and Chang, {Jenq Yang}",

note = "Funding Information: This work is supported in part by the Ministry of Economic Affairs under Grant No. 93-EC-17-A-07-S1-0001.",

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AU - Lan, Hsiao Chin

AU - Cheng, Chao Chia

AU - Wang, Chih Ming

AU - Wu, Mao Jen

AU - Chang, Jenq Yang

N1 - Funding Information: This work is supported in part by the Ministry of Economic Affairs under Grant No. 93-EC-17-A-07-S1-0001.

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AB - 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 ± μm, shows that the proposed structure could be practically applied to the grating-based demultiplexers.

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KW - Insertion loss

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Hybrid grism-lens device for diffraction grating demultiplexers

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