Ultra-broadband mode filters based on graphene-embedded waveguides

Zeshan Chang; Kin Seng Chiang

doi:10.1364/OL.42.003868

Ultra-broadband mode filters based on graphene-embedded waveguides

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

52 Scopus Citations

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Author(s)

Related Research Unit(s)

Department of Electrical Engineering

Detail(s)

Original language	English
Pages (from-to)	3868-3871
Journal / Publication	Optics Letters
Volume	42
Issue number	19
Online published	25 Sept 2017
Publication status	Published - 1 Oct 2017

Link(s)

DOI	DOI https://doi.org/10.1364/OL.42.003868 Final Published version
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Attachment(s)	Documents 17822328.pdf Post-print, 1.61 MB, PDF Publisher's Copyright Statement COPYRIGHT TERMS OF DEPOSITED POSTPRINT FILE: © 2017 Optica Publishing Group. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85030096422&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(5db15395-f3b9-4313-ba9e-62b7f77c885b).html

Abstract

We propose spatial-mode filters based on embedding graphene films in optical waveguides. To demonstrate the effectiveness and the flexibility of this approach, we design and fabricate several mode filters where graphene films of different widths and lengths are placed in different locations of polymer waveguides. Our mode filters are easy to make and can provide high mode extinction ratios that are insensitive to the operation wavelength. Such mode filters could find applications in broadband mode-division-multiplexing transmission systems and other areas that involve mode selection or stripping.