摘要 |
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.
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申请人 |
OKI ELECTRIC INDUSTRY CO.LTD.;NIPPON TELEGRAPH AND TELEPHONE CORPORATION |
发明人 |
KAWASHIMA, TOSHIYUKI;UTSUNOMIYA, JIRO;KUROSAWA, KIYOSHI;SABURO, IIDA;NAGASE, RYO;HIMENO, AKIRA;YUKIMATSU, KEN-ICHI;OKYNO, MASAYUKI;KATO, KUNIHARU;KAWACHI, MASAO |