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Optical Engineering

Design of a mode-field converter based on a two-core optical fiber with a long-period fiber grating
Author(s): Jin Wei; Ming-Yang Chen; Qian Xiang; Rui Huang
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Paper Abstract

A two-core optical fiber composed of a single-mode core and a few-mode core is proposed. Index-matched coupling between two fundamental modes in two cores can be achieved by applying a long-period fiber grating in the few-mode core. Mode-field conversion between the small mode-field area and the large mode-field area with low loss can be achieved by this configuration. Numerical simulation shows that the operation bandwidth of the mode-field converter can be as large as 36 nm if the insertion loss of the converter should be lower than 0.5 dB. Results show that this structure has higher conversion efficiency and lower cross talk as compared to the scheme of direct connection between the single-mode fiber and the few-mode fiber.

Paper Details

Date Published: 14 June 2016
PDF: 7 pages
Opt. Eng. 55(6) 066110 doi: 10.1117/1.OE.55.6.066110
Published in: Optical Engineering Volume 55, Issue 6
Show Author Affiliations
Jin Wei, Jiangsu Univ. (China)
Jiangsu Tian Xing Optoelectronics Technology Co. Ltd. (China)
Ming-Yang Chen, Jiangsu Univ. (China)
Jiangsu Tian Xing Optoelectronics Technology Co. Ltd. (China)
Qian Xiang, Jiangsu Univ. (China)
Rui Huang, Jiangsu Univ. (China)

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