NDLI: Simultaneous absolute frequency control of laser transmitters in both 1.3 and 1.55 /spl mu/m bands for multiwavelength communication systems

Content Provider	IEEE Xplore Digital Library
Author	Guy, M. Villeneuve, B. Latrasse, C. Tetu, M.
Copyright Year	1983
Abstract	Absolute frequency control will be an essential part of future dense WDM systems. In this paper, we demonstrate two promising techniques that allow the absolute frequency control of an ensemble of laser transmitters operating in both the 1.3 and 1.55 /spl mu/m bands. First, a Michelson interferometer is absolutely calibrated by means of a frequency-stabilized master DFB laser. This interferometer provides an ensemble of evenly-spaced absolute frequency references that covers both the 1.3 and 1.55 /spl mu/m regions. Lasers are frequency-locked to transmission nulls of this interferometer with a precision of a few hundred MHz. The second technique allows full flexibility in channel frequency assignment and relies on frequency offset control of an ensemble of laser sources relative to a master reference laser. The frequency comparator is based on a surface-emitting nonlinear semiconductor multilayer waveguide. This technique provides simultaneous frequency measurement and control of lasers in both bands with a precision of a few GHz.
Sponsorship	IEEE Lasers and Electro-Optics Society Optical Society of America
Starting Page	1136
Ending Page	1143
Page Count	8
File Size	966038
File Format	PDF
ISSN	07338724
Volume Number	14
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1996-06-01
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 control Transmitters Surface emitting lasers Semiconductor lasers Waveguide lasers Optical control Wavelength division multiplexing Surface waves Nonhomogeneous media Semiconductor waveguides
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

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