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Double S-bend structure for a compact two mode interference coupler.

Authors
Type
Published Article
Journal
Applied Optics
1539-4522
Publisher
The Optical Society
Publication Date
Volume
50
Issue
3
Pages
242–245
Identifiers
DOI: 10.1364/AO.50.000242
PMID: 21263716
Source
Medline
License
Unknown

Abstract

A double S-bend structure has been proposed for the reduction of coupling length of the 2 × 2 two mode interference (TMI) coupler. The coupling characteristics of the proposed structure are compared with those of conventional TMI structures using a simple mathematical model based on sinusoidal modes. The longitudinal beat length for the proposed TMI coupler is reduced by 15% of the beat length of a conventional TMI coupler. The effect of power imbalance on fabrication tolerance of the proposed TMI coupler is also studied and compared with other TMI couplers.

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