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:
Jun. 08, 2010
Filed:
Jun. 14, 2006
Noriko Sasada, Yokohama, JP;
Kazuhiko Naoe, Yokohama, JP;
Kazuhise Uomi, Hachioji, JP;
Masanobu Okayasu, Yokohama, JP;
Noriko Sasada, Yokohama, JP;
Kazuhiko Naoe, Yokohama, JP;
Kazuhise Uomi, Hachioji, JP;
Masanobu Okayasu, Yokohama, JP;
Opnext Japan, Inc., Yokohama-shi, JP;
Abstract
A wavelength tunable laser module for DWDM is used, in which a single electroabsorption modulator integrated laser is mounted and an oscillation wavelength is made tunable by temperature control. Driving conditions of a laser and a modulator are determined such that they have approximately the same modulation and transmission characteristics in a temperature control range. Such an electroabsorption modulator integrated laser is used and the driving conditions are incorporated, thereby a small, inexpensive wavelength tunable optical transmitter can be provided.