High-performance Bragg gratings in chalcogenide rib waveguides written with a modified Sagnac interferometer

Mehrdad Shokooh-Saremi; Vahid G. Ta'eed; Neil J. Baker; Ian C.M. Littler; David J. Moss; Benjamin J. Eggleton; Yinlan Ruan; Barry Luther-Davies

doi:10.1364/JOSAB.23.001323

High-performance Bragg gratings in chalcogenide rib waveguides written with a modified Sagnac interferometer

Mehrdad Shokooh-Saremi^*
, Vahid G. Ta'eed
, Neil J. Baker
, Ian C.M. Littler
, David J. Moss
, Benjamin J. Eggleton
, Yinlan Ruan
, Barry Luther-Davies

^*Corresponding author for this work

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

65 Citations (Scopus)

Abstract

We demonstrate the highest-quality Bragg gratings reported to date in chalcogenide glass rib waveguides, both in strength and apodization. A modified Sagnac interferometer is employed to write gratings in As₂S₃-based rib waveguides, achieving an induced refractive index modulation of the order of 10^-2 and a grating transmission rejection of more than 30 dB. We obtain good agreement between experimental and theoretical results based on a transfer-matrix formulation for multilayer optical structures. In addition, we report fabrication of phase-shifted Bragg gratings, as well as an investigation of the role of birefringence, higher-order modes, and aging. Finally, grating growth dynamics are investigated by in situ monitoring during writing.

Original language	English
Pages (from-to)	1323-1331
Number of pages	9
Journal	Journal of the Optical Society of America B: Optical Physics
Volume	23
Issue number	7
DOIs	https://doi.org/10.1364/JOSAB.23.001323
Publication status	Published - Jul 2006

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10.1364/JOSAB.23.001323

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title = "High-performance Bragg gratings in chalcogenide rib waveguides written with a modified Sagnac interferometer",

abstract = "We demonstrate the highest-quality Bragg gratings reported to date in chalcogenide glass rib waveguides, both in strength and apodization. A modified Sagnac interferometer is employed to write gratings in As2S3-based rib waveguides, achieving an induced refractive index modulation of the order of 10-2 and a grating transmission rejection of more than 30 dB. We obtain good agreement between experimental and theoretical results based on a transfer-matrix formulation for multilayer optical structures. In addition, we report fabrication of phase-shifted Bragg gratings, as well as an investigation of the role of birefringence, higher-order modes, and aging. Finally, grating growth dynamics are investigated by in situ monitoring during writing.",

author = "Mehrdad Shokooh-Saremi and Ta'eed, \{Vahid G.\} and Baker, \{Neil J.\} and Littler, \{Ian C.M.\} and Moss, \{David J.\} and Eggleton, \{Benjamin J.\} and Yinlan Ruan and Barry Luther-Davies",

year = "2006",

month = jul,

doi = "10.1364/JOSAB.23.001323",

language = "English",

volume = "23",

pages = "1323--1331",

journal = "Journal of the Optical Society of America B: Optical Physics",

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T1 - High-performance Bragg gratings in chalcogenide rib waveguides written with a modified Sagnac interferometer

AU - Shokooh-Saremi, Mehrdad

AU - Ta'eed, Vahid G.

AU - Baker, Neil J.

AU - Littler, Ian C.M.

AU - Moss, David J.

AU - Eggleton, Benjamin J.

AU - Ruan, Yinlan

AU - Luther-Davies, Barry

PY - 2006/7

Y1 - 2006/7

N2 - We demonstrate the highest-quality Bragg gratings reported to date in chalcogenide glass rib waveguides, both in strength and apodization. A modified Sagnac interferometer is employed to write gratings in As2S3-based rib waveguides, achieving an induced refractive index modulation of the order of 10-2 and a grating transmission rejection of more than 30 dB. We obtain good agreement between experimental and theoretical results based on a transfer-matrix formulation for multilayer optical structures. In addition, we report fabrication of phase-shifted Bragg gratings, as well as an investigation of the role of birefringence, higher-order modes, and aging. Finally, grating growth dynamics are investigated by in situ monitoring during writing.

AB - We demonstrate the highest-quality Bragg gratings reported to date in chalcogenide glass rib waveguides, both in strength and apodization. A modified Sagnac interferometer is employed to write gratings in As2S3-based rib waveguides, achieving an induced refractive index modulation of the order of 10-2 and a grating transmission rejection of more than 30 dB. We obtain good agreement between experimental and theoretical results based on a transfer-matrix formulation for multilayer optical structures. In addition, we report fabrication of phase-shifted Bragg gratings, as well as an investigation of the role of birefringence, higher-order modes, and aging. Finally, grating growth dynamics are investigated by in situ monitoring during writing.

UR - https://www.scopus.com/pages/publications/33748800936

U2 - 10.1364/JOSAB.23.001323

DO - 10.1364/JOSAB.23.001323

M3 - Article

SN - 0740-3224

VL - 23

SP - 1323

EP - 1331

JO - Journal of the Optical Society of America B: Optical Physics

JF - Journal of the Optical Society of America B: Optical Physics

IS - 7

ER -

High-performance Bragg gratings in chalcogenide rib waveguides written with a modified Sagnac interferometer

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