Title: Wavelength tuning device and wavelength tuning method
Application Number: 200610139260 Application Date: 2006.09.20
Publication Number: 1949010 Publication Date: 2007.04.18
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G02B6/34;H04J14/02;H04J14/00
Applicant(s) Name: Oki Electric Ind Co., Ltd. Address:
Inventor(s) Name: Kobayashi Shuko;Sasaki Kensuke
Attorney & Agent: huanglun wei
Abstract:
    A wavelength tuning device of the invention tunes the reflected wavelength of a fiber Bragg grating, and includes: an optical fiber ( 102 ) in which a fiber Bragg grating ( 106 ) is formed; a base member ( 104 ) to which the optical fiber ( 102 is fixed; a first temperature sensor ( 112 ) that detects a temperature of the base member ( 104 ); a thermo-module ( 116 ) that adjust the temperature of the base member ( 104 ) such that the temperature detected by the first temperature sensor ( 112 ) is maintained at a desired temperature; a second temperature sensor ( 126 ) that detects an external temperature of the wavelength tuning device; and a temperature controller ( 130 ) that controls the thermo-module ( 116 ) such that the temperature of the base member ( 104 ) is maintained at the desired temperature based on the external temperature detected by the second temperature sensor ( 126 ).
Time: 9