NDLI: Requirements for modulator-integrated DFB LD's for penalty-free 2.5-Gb/s transmission

Content Provider	IEEE Xplore Digital Library
Author	Yamaguchi, M. Kato, T. Sasaki, T. Komatsu, K. Kitamura, M.
Copyright Year	1983
Abstract	Wavelength chirp of modulator-integrated distributed-feedback laser diodes (DFB LD's) is governed by device parameters such as the modulator facet reflectivity, isolation resistance, grating coupling factor, and differential gain. We determined values of these parameters necessary for ensuring penalty-free 2.5-Gb/s transmission over at least 80-km of standard fiber. The influences of the device parameters on wavelength chirp behavior and 2.5-Gb/s data transmission performance are investigated using a new method of characterizing wavelength chirp. By transmitting light from the LD while modulating the modulator, we can determine the light intensity fluctuation after the transmission caused by wavelength chirp. This intensity fluctuation ratio (/spl Delta/I/I) is used to monitor the wavelength chirp. We use integrated devices which satisfy all these requirements, and which are grown by selective metal-organic vapor phase epitaxy (MOVPE), to demonstrate penalty-free 2.5-Gb/s transmission, even over 120-km of standard fiber.<>
Sponsorship	IEEE Lasers and Electro-Optics Society Optical Society of America
Starting Page	1948
Ending Page	1954
Page Count	7
File Size	712974
File Format	PDF
ISSN	07338724
Volume Number	13
Issue Number	10
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-10-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Chirp modulation Optical fiber devices Intensity modulation Optical modulation Fluctuations Epitaxial growth Diode lasers Reflectivity Gratings Optical coupling
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

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