Etched cavity InGaAsP/InP waveguide Fabry-Perot filter tunable by current injection

H. K. Tsang, Mark W K Mak, L. Y. Chan, J. B D Soole, C. Youtsey, I. Adesida

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

A short cavity Fabry-Perot (FP) tunable filter was fabricated by chemically assisted ion beam etching (CAIBE) of an InGaAsP/InP waveguide. The FP cavity mirrors were formed by high reflectivity dielectric coatings deposited onto the two etched facets of the cavity. High-speed (less than 3 ns) wavelength-tuning of the filter was achieved by current injection. A super-linear dependence on current injection was observed in the wavelength tuning. The filter was tunable over a continuous range of 4 nm by up to 50 mA current injection. The device had a free-spectral range of 9 nm and gave a contrast ratio of about 10 dB. A theoretical simulation of the filter was developed using a beam propagation method calculation to estimate the reflection efficiency at different mirror tilt angles. The calculated contrast ratio of the filter was in good agreement with the measured result. The calculations showed that 20 dB contrast ratio should be possible by having a facet reflectivity of over 90% and ensuring that the etched facets are off-vertical by less than 1.8°.

Original languageEnglish
Pages (from-to)1890-1895
Number of pages6
JournalJournal of Lightwave Technology
Volume17
Issue number10
DOIs
Publication statusPublished - Oct 1999
Externally publishedYes

Fingerprint

tunable filters
flat surfaces
Waveguides
injection
waveguides
filters
cavities
Tuning
tuning
mirrors
reflectance
Beam propagation method
Wavelength
wavelengths
Ion beams
Etching
Mirrors
ion beams
high speed
etching

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics

Cite this

Etched cavity InGaAsP/InP waveguide Fabry-Perot filter tunable by current injection. / Tsang, H. K.; Mak, Mark W K; Chan, L. Y.; Soole, J. B D; Youtsey, C.; Adesida, I.

In: Journal of Lightwave Technology, Vol. 17, No. 10, 10.1999, p. 1890-1895.

Research output: Contribution to journalArticle

Tsang, H. K. ; Mak, Mark W K ; Chan, L. Y. ; Soole, J. B D ; Youtsey, C. ; Adesida, I. / Etched cavity InGaAsP/InP waveguide Fabry-Perot filter tunable by current injection. In: Journal of Lightwave Technology. 1999 ; Vol. 17, No. 10. pp. 1890-1895.
@article{34055654442043daaabe9f282c5c75a8,
title = "Etched cavity InGaAsP/InP waveguide Fabry-Perot filter tunable by current injection",
abstract = "A short cavity Fabry-Perot (FP) tunable filter was fabricated by chemically assisted ion beam etching (CAIBE) of an InGaAsP/InP waveguide. The FP cavity mirrors were formed by high reflectivity dielectric coatings deposited onto the two etched facets of the cavity. High-speed (less than 3 ns) wavelength-tuning of the filter was achieved by current injection. A super-linear dependence on current injection was observed in the wavelength tuning. The filter was tunable over a continuous range of 4 nm by up to 50 mA current injection. The device had a free-spectral range of 9 nm and gave a contrast ratio of about 10 dB. A theoretical simulation of the filter was developed using a beam propagation method calculation to estimate the reflection efficiency at different mirror tilt angles. The calculated contrast ratio of the filter was in good agreement with the measured result. The calculations showed that 20 dB contrast ratio should be possible by having a facet reflectivity of over 90{\%} and ensuring that the etched facets are off-vertical by less than 1.8°.",
author = "Tsang, {H. K.} and Mak, {Mark W K} and Chan, {L. Y.} and Soole, {J. B D} and C. Youtsey and I. Adesida",
year = "1999",
month = "10",
doi = "10.1109/50.793772",
language = "English",
volume = "17",
pages = "1890--1895",
journal = "Journal of Lightwave Technology",
issn = "0733-8724",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "10",

}

TY - JOUR

T1 - Etched cavity InGaAsP/InP waveguide Fabry-Perot filter tunable by current injection

AU - Tsang, H. K.

AU - Mak, Mark W K

AU - Chan, L. Y.

AU - Soole, J. B D

AU - Youtsey, C.

AU - Adesida, I.

PY - 1999/10

Y1 - 1999/10

N2 - A short cavity Fabry-Perot (FP) tunable filter was fabricated by chemically assisted ion beam etching (CAIBE) of an InGaAsP/InP waveguide. The FP cavity mirrors were formed by high reflectivity dielectric coatings deposited onto the two etched facets of the cavity. High-speed (less than 3 ns) wavelength-tuning of the filter was achieved by current injection. A super-linear dependence on current injection was observed in the wavelength tuning. The filter was tunable over a continuous range of 4 nm by up to 50 mA current injection. The device had a free-spectral range of 9 nm and gave a contrast ratio of about 10 dB. A theoretical simulation of the filter was developed using a beam propagation method calculation to estimate the reflection efficiency at different mirror tilt angles. The calculated contrast ratio of the filter was in good agreement with the measured result. The calculations showed that 20 dB contrast ratio should be possible by having a facet reflectivity of over 90% and ensuring that the etched facets are off-vertical by less than 1.8°.

AB - A short cavity Fabry-Perot (FP) tunable filter was fabricated by chemically assisted ion beam etching (CAIBE) of an InGaAsP/InP waveguide. The FP cavity mirrors were formed by high reflectivity dielectric coatings deposited onto the two etched facets of the cavity. High-speed (less than 3 ns) wavelength-tuning of the filter was achieved by current injection. A super-linear dependence on current injection was observed in the wavelength tuning. The filter was tunable over a continuous range of 4 nm by up to 50 mA current injection. The device had a free-spectral range of 9 nm and gave a contrast ratio of about 10 dB. A theoretical simulation of the filter was developed using a beam propagation method calculation to estimate the reflection efficiency at different mirror tilt angles. The calculated contrast ratio of the filter was in good agreement with the measured result. The calculations showed that 20 dB contrast ratio should be possible by having a facet reflectivity of over 90% and ensuring that the etched facets are off-vertical by less than 1.8°.

UR - http://www.scopus.com/inward/record.url?scp=0033336472&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033336472&partnerID=8YFLogxK

U2 - 10.1109/50.793772

DO - 10.1109/50.793772

M3 - Article

VL - 17

SP - 1890

EP - 1895

JO - Journal of Lightwave Technology

JF - Journal of Lightwave Technology

SN - 0733-8724

IS - 10

ER -