Integrated multichannel OADM's using polymer bragg grating MZI's

Louay Eldada; Shing Yin; Constantina Poga; Cathy Glass; Robert Blomquist; Robert A. Norwood

doi:10.1109/68.720279

Integrated multichannel OADM's using polymer bragg grating MZI's

Louay Eldada, Shing Yin, Constantina Poga, Cathy Glass, Robert Blomquist, Robert A. Norwood

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

76 Scopus citations

Abstract

We report the first fabrication of Bragg-grating-based multichannel optical add/drop multiplexers (OADM's) in planar polymers. The filters were designed by cascading multiple stages of single-channel multi-/demultiplexers. Each stage consists of a Mach-Zehnder interferometer (MZI) with a Bragg grating across its arms. The 3-dB couplers in each MZI are multimode interference (MMI) couplers. We fabricated the first tapered MMI couplers, which provide compactness. The gratings were printed photochemically, achieving index differences as high as 10 ^-3 and reflectivities as large as 33 dB. The 3-dB bandwidth is about 0.2 nm. Apodization was used to reduce sidelobes in the reflection spectrum. Four-channel OADM's were produced and exhibited the proper 400-GHz channel separation and ITU grid wavelength alignment, as well as excellent channel isolation and uniform channel response.

Original language	English (US)
Pages (from-to)	1416-1418
Number of pages	3
Journal	IEEE Photonics Technology Letters
Volume	10
Issue number	10
DOIs	https://doi.org/10.1109/68.720279
State	Published - Oct 1998
Externally published	Yes

Keywords

DWDM
Gratings
MMI
OADM
Polymers

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

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10.1109/68.720279

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title = "Integrated multichannel OADM's using polymer bragg grating MZI's",

abstract = "We report the first fabrication of Bragg-grating-based multichannel optical add/drop multiplexers (OADM's) in planar polymers. The filters were designed by cascading multiple stages of single-channel multi-/demultiplexers. Each stage consists of a Mach-Zehnder interferometer (MZI) with a Bragg grating across its arms. The 3-dB couplers in each MZI are multimode interference (MMI) couplers. We fabricated the first tapered MMI couplers, which provide compactness. The gratings were printed photochemically, achieving index differences as high as 10 -3 and reflectivities as large as 33 dB. The 3-dB bandwidth is about 0.2 nm. Apodization was used to reduce sidelobes in the reflection spectrum. Four-channel OADM's were produced and exhibited the proper 400-GHz channel separation and ITU grid wavelength alignment, as well as excellent channel isolation and uniform channel response.",

keywords = "DWDM, Gratings, MMI, OADM, Polymers",

author = "Louay Eldada and Shing Yin and Constantina Poga and Cathy Glass and Robert Blomquist and Norwood, {Robert A.}",

year = "1998",

month = oct,

doi = "10.1109/68.720279",

language = "English (US)",

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pages = "1416--1418",

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T1 - Integrated multichannel OADM's using polymer bragg grating MZI's

AU - Eldada, Louay

AU - Yin, Shing

AU - Poga, Constantina

AU - Glass, Cathy

AU - Blomquist, Robert

AU - Norwood, Robert A.

PY - 1998/10

Y1 - 1998/10

N2 - We report the first fabrication of Bragg-grating-based multichannel optical add/drop multiplexers (OADM's) in planar polymers. The filters were designed by cascading multiple stages of single-channel multi-/demultiplexers. Each stage consists of a Mach-Zehnder interferometer (MZI) with a Bragg grating across its arms. The 3-dB couplers in each MZI are multimode interference (MMI) couplers. We fabricated the first tapered MMI couplers, which provide compactness. The gratings were printed photochemically, achieving index differences as high as 10 -3 and reflectivities as large as 33 dB. The 3-dB bandwidth is about 0.2 nm. Apodization was used to reduce sidelobes in the reflection spectrum. Four-channel OADM's were produced and exhibited the proper 400-GHz channel separation and ITU grid wavelength alignment, as well as excellent channel isolation and uniform channel response.

AB - We report the first fabrication of Bragg-grating-based multichannel optical add/drop multiplexers (OADM's) in planar polymers. The filters were designed by cascading multiple stages of single-channel multi-/demultiplexers. Each stage consists of a Mach-Zehnder interferometer (MZI) with a Bragg grating across its arms. The 3-dB couplers in each MZI are multimode interference (MMI) couplers. We fabricated the first tapered MMI couplers, which provide compactness. The gratings were printed photochemically, achieving index differences as high as 10 -3 and reflectivities as large as 33 dB. The 3-dB bandwidth is about 0.2 nm. Apodization was used to reduce sidelobes in the reflection spectrum. Four-channel OADM's were produced and exhibited the proper 400-GHz channel separation and ITU grid wavelength alignment, as well as excellent channel isolation and uniform channel response.

KW - DWDM

KW - Gratings

KW - MMI

KW - OADM

KW - Polymers

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Integrated multichannel OADM's using polymer bragg grating MZI's

Abstract

Keywords

ASJC Scopus subject areas

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