Optical waveguides – With optical coupler – Switch
Patent
1994-06-14
1996-04-30
Bovernick, Rodney E.
Optical waveguides
With optical coupler
Switch
385 14, 385 17, 385 24, 385 40, G02B 626
Patent
active
055132855
ABSTRACT:
An optical switching module has an optical waveguide substrate mounted on an electronic circuit substrate. According to a first aspect of the invention, the optical waveguide substrate has thin-film heaters, and the electronic circuit substrate has trimmable thick-film resistors for adjusting current fed to the thin-film heaters. According to a second aspect of the invention, the optical switching module also has a pair of fiber pigtails butt-coupled to the optical waveguide substrate. The fiber pigtails are secured to the ends of a supporter, which is attached to a heat sink fastened below the electronic circuit substrate. According to a third aspect of the invention, the optical waveguide substrate is mounted in a depression in the electronic circuit substrate. The invention reduces the size of the optical switching module.
REFERENCES:
patent: 4648686 (1987-03-01), Segawa
patent: 5123065 (1992-06-01), Enochs
patent: 5295011 (1994-03-01), Heise
Ito et al., "Photonic Inter-Module Connector Using Silica-Based Optical Switches", Globecom 92, Orlando, Florida, 1992, pp. 187-191.
Himeno Akira
Kato Kuniharu
Kawachi Masao
Kawashima Toshiyuki
Kurosawa Kiyoshi
Bovernick Rodney E.
Nippon Telegraph and Telephone Corporation
Oki Electric Industry Co.Ltd.
Sanghavi Hemang
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