Analysis of distributed feedback semiconductor lasers by two-dimensional theory

Journal Article · Sun Apr 01 00:00:00 EST 1990 · IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (USA)

DOI:https://doi.org/10.1109/3.53381· OSTI ID:6873664

Hori, Y; Sato, H ^[1]

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1. Matsushita Electric Industrial Co. Ltd., Moriguchi (Japan)

Two-dimensional theory of distributed feedback (DFB) lasers to take account of the planar waveguide structure is applied to the analysis of the DFB laser threshold conditions with respect to the effects of the waveguide structure and the facet reflection. The asymmetric properties of the transverse functions of the coupled modes with respect to the Bragg frequency in the dispersion relations are found to be enhanced by the asymmetric index waveguide structure and by the asymmetric facet reflectivity. Therefore, the resulting confinement factor differences in the grating layer between the two adjacent lasing modes on both sides of the Bragg frequency give large threshold gain differences. The authors propose a new design concept of the waveguide for realizing DFB lasers with a single-mode operation independent of the corrugation phase at the reflective facet.

• OSTI ID: 6873664
• Journal Information: IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (USA), Vol. 26:4; ISSN 0018-9197
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
47 OTHER INSTRUMENTATION
SEMICONDUCTOR LASERS
THRESHOLD CURRENT
WAVEGUIDES
DESIGN
MODE CONTROL
OPTICAL DISPERSION
OPTICAL PUMPING
REFLECTIVITY
CONTROL
CURRENTS
ELECTRIC CURRENTS
LASERS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
PUMPING
SEMICONDUCTOR DEVICES
SOLID STATE LASERS
SURFACE PROPERTIES
426002* - Engineering- Lasers & Masers- (1990-)
440600 - Optical Instrumentation- (1990-)