Transfer-matrix formulation of spontaneous emission noise of DFB semiconductor lasers

Journal Article · Mon Dec 31 23:00:00 EST 1990 · Journal of Lightwave Technology; (USA)

DOI:https://doi.org/10.1109/50.64926· OSTI ID:5883040

Makino, Toshihiko ^[1]

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1. Bell-Northern Research, Ltd., Ottawa (Canada)

A unified formulation of the spontaneous emission noise in semiconductor DFB (distributed feedback) lasers is presented by using a transfer-matrix approach. Analytical expressions for the noise power per unit frequency bandwidth below threshold and the spontaneous emission rate into the lasing mode are obtained based on the Green's function method. Three DFB laser structures are analyzed: (1) a standard DFB structure with facet reflectivities, (2) a multisection DFB structure composed of n sections which models a phase-shifted DFB laser and a multielectrode (tunable) DFB laser, and (3) a periodic layered DFB structure which models a surface-emitting DFB laser. It is shown that the spontaneous emission noise of a complicated DFB laser structure can be calculated easily by the transfer matrix of each section of the structure and its derivative to frequency. 21 refs.

• OSTI ID: 5883040
• Journal Information: Journal of Lightwave Technology; (USA), Journal Name: Journal of Lightwave Technology; (USA) Vol. 9; ISSN JLTED; ISSN 0733-8724
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
CALCULATION METHODS
FEEDBACK
FUNCTIONS
GREEN FUNCTION
LASERS
MATRICES
NOISE
SEMICONDUCTOR DEVICES
SEMICONDUCTOR LASERS
SOLID STATE LASERS
TRAVELLING WAVES