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:
Apr. 11, 2006
Filed:
Apr. 25, 2002
Lin Wu, San Jose, CA (US);
Zhupei Shi, San Jose, CA (US);
Yuqiao Liu, Sunnyvale, CA (US);
Wei-shin Tsay, Saratoga, CA (US);
Lin Wu, San Jose, CA (US);
Zhupei Shi, San Jose, CA (US);
Yuqiao Liu, Sunnyvale, CA (US);
Wei-Shin Tsay, Saratoga, CA (US);
Alliance Fiber Optic Products, Inc., Sunnyvale, CA (US);
Abstract
Optical devices and methods for regulating optical channel signals with specified wavelengths are disclosed. According to one aspect of the present invention, a number of variable optical apparatuses are employed. Each of the variable optical apparatuses includes a first and a second optical channel module, both configured at a wavelength λ. Each of the variable optical apparatuses further includes an optical regulator (i.e. a neutral density filter controlled by a stepper motor) coupled between the first and second optical channel modules. When signals with different wavelengths arrive, only the signal with the wavelength λwill transmit through the first optical channel module and the rest are reflected off. The transmitted signal is regulated (i.e. attenuated or strengthened) accordingly by the optical regulator before transmitting through the second optical channel module. Hence, the signals with different wavelengths can be respectively regulated by one of the variable optical apparatuses.