Bandpass spectra of evanescent couplers with long period gratings

Lam, Ping Koy; Stevenson, A; Love, John

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Bandpass spectra of evanescent couplers with long period gratings

Date

2000

Authors

Lam, Ping Koy

Stevenson, A

Love, John

Publisher

Institute of Electrical and Electronics Engineers (IEEE Inc)

Abstract

The authors propose a novel optical bandpass filter with strong sidelobe extinction but without the reflected light associated with Bragg grating filters. Long period index gratings written in the cores of an evanescent singlemode coupler suppress cross-coupling at the desired transmission wavelength, while strong optical loss in the secondary core rejects out-of-band wavelengths. Transmission spectra are calculated using coupled mode theory.

URI

http://hdl.handle.net/1885/90443

Collections

Open Access Research

Source

Electronics Letters

Type

Journal article

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Bandpass spectra of evanescent couplers with long period gratings

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