Coherent light generators – Particular active media – Semiconductor
Reexamination Certificate
2011-06-14
2011-06-14
Park, Kinam (Department: 2828)
Coherent light generators
Particular active media
Semiconductor
C372S050120, C372S050100, C372S020000
Reexamination Certificate
active
07961769
ABSTRACT:
An object is to provide a wavelength tunable semiconductor laser device, a controller for the same and a control method for the same, which prevent wavelength drifts. The wavelength tunable semiconductor laser device includes an active region for oscillating a laser beam, and a wavelength tuning region for shifting a wavelength of the laser beam. In this device, a thermal compensation region for converting most of the inputted electric power to heat is provided adjacent to the wavelength tuning region, and the sum of an electric power inputted into the wavelength tuning region and an electric power inputted into the thermal compensation region is always kept constant.
REFERENCES:
patent: 2001/0005388 (2001-06-01), Hirata et al.
patent: 2003/0194827 (2003-10-01), Lentz et al.
patent: 2004/0188518 (2004-09-01), McDonald
patent: 2005/0041699 (2005-02-01), White et al.
patent: 2007/0071055 (2007-03-01), Fuji
patent: 2009/0086206 (2009-04-01), Mori
patent: 1 737 089 (2006-12-01), None
patent: 1 750 336 (2007-02-01), None
patent: 07106548 (1995-04-01), None
patent: 8-236869 (1996-09-01), None
patent: 10-256676 (1998-09-01), None
patent: 3168855 (2001-03-01), None
patent: 3257185 (2001-07-01), None
patent: 2001-326418 (2001-11-01), None
patent: 2002-43698 (2002-02-01), None
patent: 2004-536459 (2004-12-01), None
patent: 2005-101039 (2005-04-01), None
patent: 2005101039 (2005-04-01), None
patent: 2005-276902 (2005-10-01), None
patent: 2006-261424 (2006-09-01), None
patent: WO 2005/117217 (2005-12-01), None
Extended European Search Report dated Apr. 1, 2010, issued in related European Application No. 08721629.7.
Tetsuhiko Ikegami,Semiconductor Photonics, Corona Publishing, Oct. 10, 1995, pp. 306-311.
Nunzio P. Caponio et al.,Analysis and Design Criteria of Three-Section DBR Tunable Lasers, IEEE Journal on Selected Areas in Communications, vol. 8, No. 6, Aug. 1990, pp. 1203-1213.
Osamu Ishida et al.,Fast and Stable Frequency Switching Employing a Delayed Self-Duplex(DSD)Light Source, IEEE Photonics Technology Letters, vol. 6, No. 1, Jan. 1994, pp. 13-16.
Hiroyuki Ishii,Doctoral Dissertation: Research on Enhancing Performance of Wavelength Tunable Semiconductor Laser Device, Mar. 1999, Chapter 4.
Hiroyuki Ishii et al.,Super Structure Grating(SSG)for Broadly Tunable DBR Lasers, IEEE Photonics Technology Letters, vol. 4, No. 4, Apr. 1993, pp. 393-395.
Yuichi Tohmori et al.,Broad-Range Wavelength-Tunable Superstructure Grating(SSG)DBR Lasers, IEEE Journal of Quantum Electronics, vol. 29, No. 6, Jun. 1993, pp. 1817-1823.
European Extended Search Report issued on Sep. 8, 2010 in corresponding European Patent Application No. 10167736.7.
Office Action issued on Sep. 15, 2010 in counterpart European Patent Application 08721629.7.
Fujiwara Naoki
Ishii Hiroyuki
Okamoto Hiroshi
Oohashi Hiromi
Nippon Telegraph and Telephone Corporation
Park Kinam
Workman Nydegger
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