Optical wavelength compounding/dividing device

Details Optical wavelength compounding/dividing device Optical wavelength compounding/dividing device

1987-01-29

1988-05-31

Lee, John

Multiplex communications

Wide area network

Packet switching

350 9615, 350 9616, 370 1, G02B 634

Patent

active

047476559

ABSTRACT:
An optical device is provided for dividing light depending on an optical wavelength thereof. The device includes a single input optical fiber and an output fiber array consisting of a plurality of optical fibers, and spectroscopic grating and a tetrahedral dispersion-dividing prism disposed on an optical path between the input and the output fibers. The prism has a face defining a dispersion-dividing part consisting of a plurality of step-like V-shaped grooves each having an apex with an angle of 60.degree. and two inclined surfaces, so that a light beam, the position of which is shifted depending on the wavelength thereof, hits the grooved face, and within the region of one groove, the light beam is reflected first at one of the inclined surfaces and then reflected at the other surface so as to change the direction of the light beam.

REFERENCES:
I. Nishi, et al., Electronics Letters 21,10, pp. 423,424 (1985).

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