Wavelength tuning in distributed feedback lasers by quantum well intermixing

K. S. Chan; E. Y B Pun; L. Zhan

doi:10.1109/COS.2003.1278184

Wavelength tuning in distributed feedback lasers by quantum well intermixing

K. S. Chan, E. Y B Pun, L. Zhan

Department of Electrical Engineering

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

Abstract

We analyzed theoretically the wavelength tuning mechanisms in distributed feedback (DFB) lasers using quantum well intermixing. The main factor that limits the maximum tuning range is elucidated in the analysis. It is due to the increase in carrier density required to maintain the gain above the threshold after the bandgap is blue-shifted by intermixing. The effect of grating period is also investigated and shown to have strong effects. Changing the grating period can shift the maximum tuning range from 3.5 nm to 20 nm.

Original language	English
Title of host publication	Proceedings of the 6th Chinese Optoelectronics Symposium, COES 2003
Publisher	IEEE
Pages	137-139
ISBN (Print)	0780378873, 9780780378872
DOIs	https://doi.org/10.1109/COS.2003.1278184
Publication status	Published - 2003
Event	6th Chinese Opto-Electronics Symposium (COES'03) - Hong Kong University of Science and Technology, Hong Kong, China Duration: 12 Sept 2003 → 14 Sept 2003

Conference

Conference	6th Chinese Opto-Electronics Symposium (COES'03)
Place	Hong Kong, China
Period	12/09/03 → 14/09/03

Research Keywords

Distributed feedback devices
Gratings
Laser feedback
Laser theory
Laser tuning
Optical attenuators
Optical refraction
Photonic band gap
Quantum well lasers
Waveguide lasers

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@inproceedings{2fc77fbdfd404707922adfceabc132c8,

title = "Wavelength tuning in distributed feedback lasers by quantum well intermixing",

abstract = "We analyzed theoretically the wavelength tuning mechanisms in distributed feedback (DFB) lasers using quantum well intermixing. The main factor that limits the maximum tuning range is elucidated in the analysis. It is due to the increase in carrier density required to maintain the gain above the threshold after the bandgap is blue-shifted by intermixing. The effect of grating period is also investigated and shown to have strong effects. Changing the grating period can shift the maximum tuning range from 3.5 nm to 20 nm.",

keywords = "Distributed feedback devices, Gratings, Laser feedback, Laser theory, Laser tuning, Optical attenuators, Optical refraction, Photonic band gap, Quantum well lasers, Waveguide lasers",

author = "Chan, {K. S.} and Pun, {E. Y B} and L. Zhan",

year = "2003",

doi = "10.1109/COS.2003.1278184",

language = "English",

isbn = "0780378873",

pages = "137--139",

booktitle = "Proceedings of the 6th Chinese Optoelectronics Symposium, COES 2003",

publisher = "IEEE",

address = "United States",

note = "6th Chinese Opto-Electronics Symposium (COES'03) ; Conference date: 12-09-2003 Through 14-09-2003",

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TY - GEN

T1 - Wavelength tuning in distributed feedback lasers by quantum well intermixing

AU - Chan, K. S.

AU - Pun, E. Y B

AU - Zhan, L.

PY - 2003

Y1 - 2003

N2 - We analyzed theoretically the wavelength tuning mechanisms in distributed feedback (DFB) lasers using quantum well intermixing. The main factor that limits the maximum tuning range is elucidated in the analysis. It is due to the increase in carrier density required to maintain the gain above the threshold after the bandgap is blue-shifted by intermixing. The effect of grating period is also investigated and shown to have strong effects. Changing the grating period can shift the maximum tuning range from 3.5 nm to 20 nm.

AB - We analyzed theoretically the wavelength tuning mechanisms in distributed feedback (DFB) lasers using quantum well intermixing. The main factor that limits the maximum tuning range is elucidated in the analysis. It is due to the increase in carrier density required to maintain the gain above the threshold after the bandgap is blue-shifted by intermixing. The effect of grating period is also investigated and shown to have strong effects. Changing the grating period can shift the maximum tuning range from 3.5 nm to 20 nm.

KW - Distributed feedback devices

KW - Gratings

KW - Laser feedback

KW - Laser theory

KW - Laser tuning

KW - Optical attenuators

KW - Optical refraction

KW - Photonic band gap

KW - Quantum well lasers

KW - Waveguide lasers

UR - http://www.scopus.com/inward/record.url?scp=84945576970&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84945576970&origin=recordpage

U2 - 10.1109/COS.2003.1278184

DO - 10.1109/COS.2003.1278184

M3 - RGC 32 - Refereed conference paper (with host publication)

SN - 0780378873

SN - 9780780378872

SP - 137

EP - 139

BT - Proceedings of the 6th Chinese Optoelectronics Symposium, COES 2003

PB - IEEE

T2 - 6th Chinese Opto-Electronics Symposium (COES'03)

Y2 - 12 September 2003 through 14 September 2003

ER -

Wavelength tuning in distributed feedback lasers by quantum well intermixing

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