Optical multiplexing/demultiplexing device with multiple ports

Details Optical multiplexing/demultiplexing device with multiple ports Optical multiplexing/demultiplexing device with multiple ports

1990-05-11

1991-03-19

Ullah, Akm

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

350 9616, 350 9620, 455610, G02B 626, G02B 642, G02B 628, G02F 100

Patent

active

050005308

ABSTRACT:
An optical multiplexing/demultiplexing device with multiple ports. A plurality of pairs of V-grooves are provided in parallel on each substrate made of invar or the same type of material as the optical fibers with the same linear expansion coefficient so as to store the optical fibers. A pair of substrates having the symmetrical structure are assembled to form a plurality of optical multiplexing/demultiplexing circuits. A pair of trenches are provided on each substrate in parallel with and on both sides of the V-grooves. Optical fiber terminals led from the respective V-grooves are connected to form a 1.times.n (n: an integer.gtoreq.2) star coupler structure.

REFERENCES:
patent: 4449783 (1984-05-01), Witte
patent: 4556279 (1985-12-01), Shaw et al.
patent: 4732449 (1988-03-01), Fan
patent: 4900118 (1990-02-01), Yanagawa et al.

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