Optical: systems and elements – Optical amplifier – Raman or brillouin process
Reexamination Certificate
2008-05-27
2008-05-27
Hughes, Deandra (Department: 3663)
Optical: systems and elements
Optical amplifier
Raman or brillouin process
C359S341300
Reexamination Certificate
active
10715141
ABSTRACT:
A plurality of pump light sources generate plural variations of pump light having different frequencies. A modulation circuit intensity-modulates the plural variations of pump light in the predetermined periods, respectively. A pump light pair whose frequency difference equals a Raman shift frequency are modulated such that they cannot simultaneously enters an emission state. A wavelength-multiplexer wavelength-multiplexes the plural variations of pump light modulated by the modulation circuit. A optical guide device guides the plural variations of pump light wavelength-multiplexed by the wavelength-multiplexer to an optical fiber.
REFERENCES:
patent: 5570218 (1996-10-01), Sotom et al.
patent: 5991071 (1999-11-01), Naito
patent: 6373621 (2002-04-01), Large et al.
patent: 6452716 (2002-09-01), Park et al.
patent: 6456426 (2002-09-01), Bolshtyansky et al.
patent: 6587260 (2003-07-01), Kikuchi et al.
patent: 6611368 (2003-08-01), Grant et al.
patent: 6639715 (2003-10-01), Naito et al.
patent: 6704135 (2004-03-01), Sasaoka et al.
patent: 6813067 (2004-11-01), Birk et al.
patent: 6844961 (2005-01-01), Odate et al.
patent: 6930823 (2005-08-01), Nakamoto et al.
patent: 7116470 (2006-10-01), Martinelli et al.
patent: 7133192 (2006-11-01), Tanaka et al.
patent: 7149256 (2006-12-01), Vrazel et al.
patent: 7158286 (2007-01-01), Havard et al.
patent: 7212333 (2007-05-01), Sugaya
patent: 7239441 (2007-07-01), Yoshida
patent: 2002/0097481 (2002-07-01), Du et al.
patent: 2002/0145796 (2002-10-01), Kikuchi et al.
patent: 2003/0072050 (2003-04-01), Vrazel et al.
patent: 2003/0081307 (2003-05-01), Fludger et al.
patent: 2004/0004754 (2004-01-01), Mailhot et al.
patent: 2004/0190120 (2004-09-01), Torii et al.
patent: 2005/0100343 (2005-05-01), Yoshida
patent: 2005/0110980 (2005-05-01), Maehara et al.
patent: 2006/0050365 (2006-03-01), Hainberger et al.
patent: 1 148 666 (2001-10-01), None
patent: 1148666 (2001-10-01), None
patent: 11-307854 (1999-11-01), None
patent: 2002-6349 (2002-01-01), None
patent: 2002-229084 (2002-08-01), None
patent: 2002-303895 (2002-10-01), None
patent: WO 02/086554 (2002-10-01), None
Naito, T.; Tanaka, T.; Torii, K.; Shimojoh, N.; Nakamoto, H.; Suyama, M.; A broadband distributed Raman amplifier for bandwidths beyond 100 nm; Optical Fiber Communication Conference and Exhibit, 2002. OFC 2002; Mar. 17-22, 2002 pp. 116-117.
Y. Emori, K. Tanaka and S. Namiki; 100nm bandwidth flat-gain Raman amplifiers pumped and gain-equalised by 12-wavelength-channel WDM laser diode unit; Elec. Lett. Aug. 5, 1999 vol. 35 No. 16.
Govind P. Agrawal, Nonlinear Fiber Optics, Second Edition, 1995, pp. 316-319, 363.
C.R.S. Fludger et al., “Novel Ultra-Broadband High Performance Distributed Raman Amplifier Employing Pump Modulation”, Optical Fiber Communication Conference (OFC 2002), Mar. 20, 2002, pp. 183-184.
Naito et al.; “A Broadband Distributed Raman Amplifiers for Bandwidths Beyond 100 nm”; Optical Fiber Communication Conference; Technical Digest, Post Conference Digest; Mar. 17-22, 2002; Trends in Optics and Photonics Series (TOPS), vol. 70, pp. 116-117.
Partial European Search Report for European Patent Application No. 03026524.3-1246; dated Jun. 29, 2005.
Naito et al., “A Broadband Distributed Raman Amplifier for Bandwidths Beyond 100 nm,” Optical Fiber Communication Conference and Exhibit (OFC), Technical Digest Postconference Digest, Anaheim, CA, Mar. 17-22, 2002.
Fludger et al., “Novel Ultra-Broadband High Performance Distributed Raman Amplifier Employing Pump Modulation,” Optical Fiber Communication Conference and Exhibit (OFC), Technical Digest, Postconference Digest, Anaheim, CA, Mar. 17-22.
European Search Report for European Application No. EP 03026524.3-2415 dated Jan. 23, 2006.
Japanese Patent Office Notice of Rejection Grounds, mailed Mar. 20, 2007 and issued in corresponding Japanese Patent Application No. 2002-334037.
Naito Takao
Nakamoto Hiroshi
Tanaka Toshiki
Torii Ken-ichi
Diacou Ari M
Fujitsu Limited
Hughes Deandra
Staas & Halsey , LLP
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