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:
Jul. 04, 2006
Filed:
Apr. 09, 2004
Shunichi Matsushita, Chiyoda-ku, JP;
Shu Namiki, Chiyoda-ku, JP;
Yoshihiro Emori, Chiyoda-ku, JP;
The Furukawa Electric Co., Ltd., Tokyo, JP;
Abstract
The present invention provides the following designing method: in a laser diode module or a depolarized laser diode module which has one laser diode and one polarization maintaining fiber connected to the output side thereof, the length of the polarization maintaining fiber is a value obtained by calculation of equation 37 with use of a longitudinal mode spacing Δλoutput light from the Fabry Perot (FP) laser diode, an oscillating center wavelength λof the laser light, a beat length Lof the polarization maintaining fiber and an optical wavelength λused in the measurement of the L. (Equation 37)