Title :
Low-chirp highly linear 1.55 μm strained-layer MQW DFB lasers for optical analog TV distribution systems
Author :
Haisch, Hansjorg ; Cebulla, Ulrich ; Zielinski, Erich ; Bouayad-Amine, Jamal ; Klenk, Markus ; Laube, Gert ; Mayer, Hans-Peter ; Weinmann, Reinhold ; Speier, Peter
Author_Institution :
Alcatel SEL AG, Stuttgart, Germany
fDate :
6/1/1993 12:00:00 AM
Abstract :
The design and realization of highly linear 1.5-μm distributed-feedback (DFB) lasers for optical analog TV distribution systems based on dispersive single-mode fibers are reported. A simple and comprehensive model relating grating characteristics to laser chirp was developed and used for optimization of the DFB grating. The model predicts that lasers emitting at wavelengths located in the positive slope sections of the DFB-reflectivity-wavelength characteristic have higher resonance frequencies and reduced chirp. The lasers were realized by using strained-layer multiple quantum wells for high differential gain and low α factor, antireflection (AR) coating of one laser facet for reduction of internal photon density, and a special grating design for low spatial hole burning and chirp reduction
Keywords :
cable television; distributed feedback lasers; laser transitions; optical communication equipment; optical hole burning; semiconductor lasers; 1.55 micron; DFB grating; DFB-reflectivity-wavelength characteristic; chirp reduction; comprehensive model; design; dispersive single-mode fibers; grating characteristics; internal photon density; laser chirp; laser facet; optical analog TV distribution systems; realization; resonance frequencies; spatial hole burning; special grating design; strained layer multiple quantum well distributed feedback lasers; strained-layer multiple quantum wells; Chirp; Dispersion; Fiber lasers; Gratings; Laser modes; Optical design; Quantum well devices; Quantum well lasers; Stimulated emission; TV;
Journal_Title :
Quantum Electronics, IEEE Journal of
