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:
May. 02, 2006
Filed:
Feb. 05, 2003
Akihiko Nishiki, Tokyo, JP;
Masanori Hanawa, Yamanashi, JP;
Hiroyuki Sasaki, Hiroshima, JP;
Mikio Takahara, Yamanashi, JP;
Akihiko Nishiki, Tokyo, JP;
Masanori Hanawa, Yamanashi, JP;
Hiroyuki Sasaki, Hiroshima, JP;
Mikio Takahara, Yamanashi, JP;
Oki Electric Industry Co., Ltd., Tokyo, JP;
Abstract
A method for generating an optical pulse train includes generating a source optical pulse train having a predetermined pulse period; optically combining a plurality of uniform pitch grating waveguides having a substantially identical Bragg wavelength and λ/4-phase-shift waveguides in an alternating sequence so as to form a multiple λ/4-phase-shift grating waveguide; inputting the source optical pulse train from one end of the multiple λ/4-phase-shifted grating waveguide; and extracting reflected optical pulses by the plurality of uniform pitch grating waveguides from the one end of the multiple λ/4-phase-shifted grating waveguide.