Wavelength detecting device

Details Wavelength detecting device Wavelength detecting device

1999-02-04

2000-04-04

Evans, F. L.

Optics: measuring and testing

By shade or color

With color transmitting filter

356419, 250226, G01J 315

Patent

active

060468130

ABSTRACT:
A wavelength detecting device is used for a wavelength multiplexing optical communication system, is simple and inexpensive, and can strictly control the wavelengths of signal beams that are close to one another. The device has a path splitter and a wavelength selector. The path splitter splits a beam into at least three beams having different path angles. The wavelength selector filters the split beams into beams having predetermined wavelengths. One of the filtered beams is provided as a signal beam and the other beams are provided as monitor beams used to detect the wavelength of the signal beam.

REFERENCES:
patent: 4103254 (1978-07-01), Chikami
patent: 4547664 (1985-10-01), Vogt et al.

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