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:
Feb. 11, 2003
Filed:
Oct. 01, 1998
Applicant:
Inventor:
Paisheng Shen, Fremont, CA (US);
Assignee:
Alliance Fiber Optics Products, Inc., Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/26 ;
U.S. Cl.
CPC ...
G02B 6/26 ;
Abstract
An unpolarized monochromatic light source with wavelength tunable capability wherein a monochromatic laser source ( ) is connected to an incoherent cascaded fiber-ring depolarizer ( ) through a single mode fiber ( ) under the condition that L >>L wherein L is the length of fiber-ring delay line ( ) and L is the coherence length of the light source ( ). The combination of the monochromatic laser source ( ) and the incoherent cascaded fiber ring depolarizer ( ) can be further connected to an external modulator ( ) for amplitude modulation, frequency modulation, or phase modulation of the light signal.