Optical branching device

Details Optical branching device Optical branching device

1994-11-01

1997-05-06

Ngo, John

Optical waveguides

With optical coupler

Particular coupling structure

385 14, 385 43, 385132, G02B 626

Patent

active

056279280

ABSTRACT:
An optical branching device according to present invention comprises a cladding member, a first core member, a second core member, and a third core member. These core members are isolated each other, and the with of a edge face of the first core member is greater than total length of the widths of second and third core members terminals facing to the first core member and a gap between the second and third core members.

REFERENCES:
patent: 4991926 (1991-02-01), Paviath
patent: 5461684 (1995-10-01), Vinchant et al.
Patent Abstracts of Japan, vol. 4, No. 163 (P-36) (645) Sep. 13, 1980 & JP-A-55 110 205 (Ricoh).
Patent Abstracts of Japan, vol. 6, No. 262 (P-164) Sep. 28, 1982 & JP-A-57 207 (KDD).
Zirngibl et al, "Efficient 1.times.16 Optical Power Splitter Based on InP", Electronics Letters, vol. 28, No. 13, Jun. 18, 1992, pp. 1212-1213.
Rolland et al, "Optimization of Strongly Guiding Semiconductor Rib Waveguide Y-Junctions", IEEE Photonics Technology Letters, vol. 2, No. 6, Jun. 1990, New York, US, pp. 404-406.
Veerman et al, "An Optical Passive 3-dB TMI-Coupler with Reduces Fabrication Tolerance Sensitivity", Journal of Lightwave Technology, vol. 10, No. 3, Mar. 1992, New York, US, pp. 306-311.

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