Narrow-linewidth resonant optical device, transmitter, system, a

Details Narrow-linewidth resonant optical device, transmitter, system, a Narrow-linewidth resonant optical device, transmitter, system, a

1988-09-23

1989-08-01

Lee, John D.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

350 9615, 455612, G02B 634

Patent

active

048529605

ABSTRACT:
Highly frequency-selective reflectivity is realized in an optical device including a waveguide and an evanescent-field coupled grating resonator cavity. The device may include a light source and serve as a low-chirp, narrow-linewidth communications laser for use, e.g., for transmission over a fiber having non-negligible dispersion and also in wavelength-multiplexed coherent systems.

REFERENCES:
patent: 4312562 (1982-01-01), Segawa et al.
patent: 4669816 (1987-06-01), Thompson
"Narrow-Band Grating Resonator Filters in InGaAsP/InP Waveguides", Applied Physics Letters, vol. 49, 1986, pp. 125-127, by R. C. Alferness et al.
"Channelled-Substrate Buried-Heterostructure InGaAsP/InP Laser with Semi-Insulating OMVPE Base Structure and LPE Regrowth", Electronics Letters, vol. 22, pp. 869-870, by D. P. Wilt et al.

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