Chirp reduction and bandwidth enhancement for direct current modulation in an optically injected semiconductor laser

S. K. Hwang; Y. Okajima; J. M. Liu

doi:10.1117/12.470549

Chirp reduction and bandwidth enhancement for direct current modulation in an optically injected semiconductor laser

S. K. Hwang, Y. Okajima, J. M. Liu

Department of Photonics

Research output: Contribution to journal › Conference article › peer-review

Abstract

A directly modulated semiconductor laser when subject to optical injection locking is experimentally investigated. The modulation bandwidth is observed to increase when the laser is injection-locked to an external optical signal. It enhances with increasing injection strength and positively increasing detuning frequency. A more than three fold of bandwidth enhancement is observed experimentally. The frequency chirping is observed to reduce in the injection-locked laser system. It reduces significantly at low modulation frequency and increases with modulation frequency, approaching to that of the laser in free-running condition at high modulation frequency. More importantly, simultaneous bandwidth enhancement and chirp reduction is experimentally achieved.

Original language	English
Pages (from-to)	463-470
Number of pages	8
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	4646
DOIs	https://doi.org/10.1117/12.470549
Publication status	Published - 2002
Event	Physics and Simulation of Optoelectronic Devices X - San Jose, CA, United States Duration: 2002 Jan 21 → 2002 Jan 25

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Applied Mathematics
Electrical and Electronic Engineering
Computer Science Applications

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10.1117/12.470549

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title = "Chirp reduction and bandwidth enhancement for direct current modulation in an optically injected semiconductor laser",

abstract = "A directly modulated semiconductor laser when subject to optical injection locking is experimentally investigated. The modulation bandwidth is observed to increase when the laser is injection-locked to an external optical signal. It enhances with increasing injection strength and positively increasing detuning frequency. A more than three fold of bandwidth enhancement is observed experimentally. The frequency chirping is observed to reduce in the injection-locked laser system. It reduces significantly at low modulation frequency and increases with modulation frequency, approaching to that of the laser in free-running condition at high modulation frequency. More importantly, simultaneous bandwidth enhancement and chirp reduction is experimentally achieved.",

author = "Hwang, {S. K.} and Y. Okajima and Liu, {J. M.}",

year = "2002",

doi = "10.1117/12.470549",

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pages = "463--470",

journal = "Proceedings of SPIE - The International Society for Optical Engineering",

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TY - JOUR

T1 - Chirp reduction and bandwidth enhancement for direct current modulation in an optically injected semiconductor laser

AU - Hwang, S. K.

AU - Okajima, Y.

AU - Liu, J. M.

PY - 2002

Y1 - 2002

N2 - A directly modulated semiconductor laser when subject to optical injection locking is experimentally investigated. The modulation bandwidth is observed to increase when the laser is injection-locked to an external optical signal. It enhances with increasing injection strength and positively increasing detuning frequency. A more than three fold of bandwidth enhancement is observed experimentally. The frequency chirping is observed to reduce in the injection-locked laser system. It reduces significantly at low modulation frequency and increases with modulation frequency, approaching to that of the laser in free-running condition at high modulation frequency. More importantly, simultaneous bandwidth enhancement and chirp reduction is experimentally achieved.

AB - A directly modulated semiconductor laser when subject to optical injection locking is experimentally investigated. The modulation bandwidth is observed to increase when the laser is injection-locked to an external optical signal. It enhances with increasing injection strength and positively increasing detuning frequency. A more than three fold of bandwidth enhancement is observed experimentally. The frequency chirping is observed to reduce in the injection-locked laser system. It reduces significantly at low modulation frequency and increases with modulation frequency, approaching to that of the laser in free-running condition at high modulation frequency. More importantly, simultaneous bandwidth enhancement and chirp reduction is experimentally achieved.

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M3 - Conference article

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SN - 0277-786X

VL - 4646

SP - 463

EP - 470

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

T2 - Physics and Simulation of Optoelectronic Devices X

Y2 - 21 January 2002 through 25 January 2002

ER -

Chirp reduction and bandwidth enhancement for direct current modulation in an optically injected semiconductor laser

Abstract

All Science Journal Classification (ASJC) codes

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