Distributed feedback laser diode

Details Distributed feedback laser diode Distributed feedback laser diode

1987-07-23

1988-12-27

Sikes, William L.

Coherent light generators

Particular resonant cavity

Distributed feedback

372 45, 372 48, 372 49, 372102, H01S 308, H01S 319

Patent

active

047946180

ABSTRACT:
An improved distributed feedback laser diode comprises a diffraction grating in a resonator. The diffraction grating is formed to have a phase shift of .lambda./8 to 3.lambda./16 at a portion thereof so that the phase shift amount of approximately .lambda./4 is obtained in a case where a maximum rate of light output is produced thereby to result in a single axial mode oscillation.

REFERENCES:
patent: 4701930 (1987-10-01), Akiba et al.
Utaka et al., "Analysis of Quarter-Wave Shifted DFB Laser", Electronics Letters, Apr. 12, 1984, vol. 20, No. 8, pp. 326-327.
Characteristics of Quarter-Wave Shifted DFB Laser Diode (No. 1017), The Institute of Electronics and Communication Engineers of Japan, 3/26 to 28/84, pp. 49-56.
Fabrication of 1.5 um Phase-Shifted DFB Lasers (No. 1018), The Institute of Electronics and Communications Engineers of Japan, Mar. 26 to 28, 1984, pp. 4-71-4.72.

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