The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 28, 2005
Filed:
May. 06, 2002
King-chang Shu, Taipei, TW;
Ding-wei Huang, Taipei, TW;
Tsung-hsuan Chiu, Hsinchu, TW;
Yinchieh Lai, Taichung, TW;
King-Chang Shu, Taipei, TW;
Ding-Wei Huang, Taipei, TW;
Tsung-Hsuan Chiu, Hsinchu, TW;
Yinchieh Lai, Taichung, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
A thermo-optic wave-guide switch. The switch selectively switches the paths of an optical signal. The thermo-optic wave-guide switch includes a multi-mode wave-guide having an input port, a first output port and a second output port, and a thin film heater formed on the side of the multi-mode wave-guide. When the thin film heater does not provide the multi-mode wave-guide with heat and a signal is received by the input port, the first output port outputs the signal in a cross state according to the self-image theorem, and when the thin film heater provides the multi-mode wave-guide with heat and a signal is received by the input port, the second output port outputs the signal in a bar state.