Optical communications – Receiver – Heterodyne
Reexamination Certificate
2004-03-11
2008-12-16
Phan, Hanh (Department: 2613)
Optical communications
Receiver
Heterodyne
C398S202000, C398S203000, C398S205000, C398S206000, C398S207000, C398S208000, C398S209000, C398S213000, C398S214000, C356S484000, C356S451000, C356S477000, C356S073100, C250S2140RC, C250S227270, C250S227190, C250S227170
Reexamination Certificate
active
07466929
ABSTRACT:
A system and method for superheterodyne detection in accordance with the invention. The system comprises a first conversion unit for performing a first heterodyne operation on an optical input signal to generate an electrical IF signal. A second conversion unit is electrically or optically coupled to the first conversion unit. The second conversion unit performs a second heterodyne operation to generate an electrical output signal suitable for signal processing.
REFERENCES:
patent: 3975628 (1976-08-01), Graves et al.
patent: 4553264 (1985-11-01), Hasegawa et al.
patent: 4723317 (1988-02-01), Glance
patent: 5134509 (1992-07-01), Olshansky et al.
patent: 5305134 (1994-04-01), Tsushima et al.
patent: 5631760 (1997-05-01), Heidemann
patent: 6535290 (2003-03-01), Spanner
patent: 6850710 (2005-02-01), Mells
patent: 7265849 (2007-09-01), Gurunathan et al.
patent: 2004/0114939 (2004-06-01), Taylor
patent: 1355969 (2002-06-01), None
patent: 2000/077956 (2000-12-01), None
Szafraniec, et al.; “Polarization-Diverse Coherent Optical Spectrum Analyzer With Swept Local Oscillator”; ThGG5 5:30 pm; 2 sheets, 2002.
Baney, et al.; “Coherent Optical Spectrum Analyzer”; Ieee Photonics Technology Letters, vol. 14, No. 3.; Mar. 2002; pp. 355-357.
CN Application 200510053840.5, Office Action Dated Apr. 11, 2008, This office action is from the Chinese counterpart application, and recites the other documents in this Information Disclosure Statement.
Baney Douglas M.
Szafraniec Bogdan
Tan Tun S.
Agilent Technologie,s Inc.
Phan Hanh
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