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:
Oct. 21, 2008
Filed:
Apr. 11, 2007
Kensuke Sasaki, Kanagawa, JP;
Shuko Kobayashi, Kanagawa, JP;
Kensuke Sasaki, Kanagawa, JP;
Shuko Kobayashi, Kanagawa, JP;
Oki Electric Industry Co., Ltd., Tokyo, JP;
Abstract
An optical pulse time spreader which can generate a chip pulse string of which intensity is equalized. The reflectances R, Rand Rof the first, second and k-th (k is an integer which satisfies 3≦k≦J) unit FBG are given by the following formulae respectively.(constant)   (a)/(1−)  (b)=()/{(1−)·(1−). . . (1−)}   (c-1)=()/{(1−)·(1−). . . (1−)}   (c-2) Here Pis an arbitrary constant, and Pis an intensity of a triple reflection chip pulse which is output for the k-th time. The formulae (c-1) and (c-2) are the reflectance of the k-th unit diffraction grating when the phase difference between the single reflection chip pulse, which is output for the k-th time, and the triple reflection chip pulse, which is output for the k-th time, is 0 and π respectively.