Heteroepitaxial ridge-overgrown distributed feedback laser at 1. 5. mu. m
A new distributed feedback laser, the heteroepitaxial ridge-overgrown distributed feedback (HRO DFB) laser, is proposed and demonstrated. The HRO DFB lasers operated in stable single longitudinal mode with no observable mode partition events under 2-Gb/s pseudo-random pulse modulation with dynamic spectral widths typically 0.5--2 A even with both facets cleaved. Other characteristics of these 1.5-..mu..m GaInAsP HRO DFB lasers include approx.10 mW/facet (no antireflection coating) of stable beam, single longitudinal mode output power, and narrow lateral beam divergence of approx.12/sup 0/ (half-power full width). Actual transmission experiments with dispersive fibers (17 ps/km nm) at approx.1.55 ..mu..m confirmed that the HRO DFB laser is an excellent ''single-frequency'' optical source.
- Research Organization:
- ATandT Bell Laboratories, Murray Hill, New Jersey 07974
- OSTI ID:
- 6219795
- Journal Information:
- Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 45:12; ISSN APPLA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
420300* -- Engineering-- Lasers-- (-1989)
ANTIREFLECTION COATINGS
COATINGS
DESIGN
FABRICATION
FIBERS
FREQUENCY MODULATION
HETEROJUNCTIONS
JUNCTIONS
LASERS
LIGHT TRANSMISSION
LINE WIDTHS
MODULATION
OPERATION
OPTICAL FIBERS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR JUNCTIONS
SEMICONDUCTOR LASERS