Wavelength division multiplexing optical transmission device and

Details Wavelength division multiplexing optical transmission device and Wavelength division multiplexing optical transmission device and

1998-06-19

2000-06-27

Palmer, Phan T. H.

Optical waveguides

With optical coupler

Plural

385 37, 385 27, 372 6, G02B 628

Patent

active

060816368

ABSTRACT:
A transmitter and a receiver for wavelength division multiplexing optical transmission need no multiplexer and can be made compact and manufactured easily while promising a high reliability of a system using them. By using second-order Bragg diffraction gratings to form the output mechanism, a plurality of DFB laser-type elements can be integrated so that their optical outputs adversely affect each other. Therefore, a plurality of lasers can be arranged coaxially to form a light source for wavelength division multiplexing optical transmission without using a multiplexer. By using the same mechanism on the part of a receiver, a demultiplexer can be omitted.

REFERENCES:
patent: 4958357 (1990-09-01), Kinoshita
patent: 5910962 (1999-06-01), Pan et al.

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