NDLI: Pure frequency modulation of a multielectrode distributed-Bragg-reflector (DBR) laser diode

Content Provider	IEEE Xplore Digital Library
Author	Ishida, O. Toba, H. Tohmori, Y.
Copyright Year	1989
Abstract	Intensity-modulation suppressed frequency modulation (FM) is demonstrated over a 600-MHz bandwidth by using a three-electrode distributed-Bragg-reflector (DBR) laser diode (LD). A nonuniform carrier-density distribution in the active region is realized by two separated electrodes, whose push-pull modulation yields only a 0.7% intensity fluctuation per 1-GHz frequency deviation. This corresponds to a 20-dB FM purity improvement. A third electrode on the DBR region makes it possible to tune the wavelength simultaneously. Because of its wider modulation bandwidth, the LD is suitable for the lightwave oscillator in frequency-shift-keyed (FSK) transmissions and for linewidth reduction by electrical feedback.<>
Sponsorship	IEEE Lasers and Electro-Optics Society
Starting Page	156
Ending Page	158
Page Count	3
File Size	282017
File Format	PDF
ISSN	10411135
Volume Number	1
Issue Number	7
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1989-07-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Frequency modulation Frequency shift keying Bandwidth Distributed Bragg reflectors Electrodes Diode lasers Intensity modulation Fluctuations Oscillators Feedback
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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