Optical communications – Receiver – Heterodyne
Reexamination Certificate
2005-07-19
2005-07-19
Sedighian, M. R. (Department: 2633)
Optical communications
Receiver
Heterodyne
C398S079000, C398S082000, C398S087000, C398S202000, C398S212000
Reexamination Certificate
active
06920290
ABSTRACT:
An array of diffraction grating coupled infrared photodetectors is coupled to corresponding high-speed amplifiers for creating a multiple channel high speed receiver for an optical communication system. Each photodetector includes a three-dimensional diffractive resonant optical cavity formed by a diffraction grating that resonates over a narrow range of wavelengths. By creating different resonant optical cavities, the receiver detects each optical channel individually, thereby simplifying receiver design. The receiver finds ready application in systems based upon high power CO2lasers and semiconductor lasers such as quantum cascade lasers allowing extremely long line of sight communication, such as between satellites. Other applications include ship to ship or ground to missile communications. These applications will benefit from increased jamming resistance and security.
REFERENCES:
patent: 4322693 (1982-03-01), Fry
patent: 5315128 (1994-05-01), Hunt et al.
patent: 5389797 (1995-02-01), Bryan et al.
patent: 5455421 (1995-10-01), Spears
patent: 5479018 (1995-12-01), McKee et al.
patent: 5485015 (1996-01-01), Choi
patent: 5539206 (1996-07-01), Schimert
patent: 5726805 (1998-03-01), Kaushik et al.
patent: 5773831 (1998-06-01), Brouns
patent: 5818066 (1998-10-01), Duboz
patent: 5949561 (1999-09-01), Goossen et al.
patent: 6233380 (2001-05-01), Ferrieu
patent: 6414769 (2002-07-01), Meli et al.
patent: 2002/0009258 (2002-01-01), Coldren et al.
J.-H. Lee, S.S. Li, M.Z. Tidrow, W.K.Liu,Investigation of multi-color, broadband quantum well infrared photodetectors with digital graded superlattice barrier and linear-graded barrier for long wavelength infrared applications, Infrared Physics&Technology, vol. 42, pp. 123-134, (2001).
Lucent Technologies Bell Labs Innovations Technical Paper,Arrayed Waveguide Grating Multiplexer/Demultiplexer, 6 pages (Jan. 2000).
H. C. Liu,Quantum Well Infrared Photodetector Physics and Novel Devices, Intersubband Transitions in Quantum Wells, Physics and Device Applications I, Semiconductors and Semimetals, vol. 62, cover page and pp. 129-196 (2000).
Feng-Qi Liu, Ding Ding, Bo Xu, Yong-Ahao Ahang, Quan-Sheng Zhang, Zhan-Guo Wang, De-Sheng Jiang, Bao-Quan Sun,Strain-compensated quantum cascade lasers operating at room temperature, Journal of Crystal Growth, vol. 220, pp. 439-443 (2000).
Jung-Hee Lee and Sheng S. Li,Quantum-well infrared photodetectors with digital graded superlattice barrier for long-wavelength and broadband detection, American Institute of Physics, vol. 75, No. 20, 3 pages (1999).
Alessandro Tredicucci, Claire Gmachi, Frederico Capasso, Deborah L. Sivco, Albert L. Hutchinson and Alfred Y. Cho,A multiwavelength semiconductor laser, Nature, vol. 396, pp. 350-353 (Nov. 26, 1998).
Ivars Melngailis, William E. Keicher, Charles Freed, Stephen Marcus, Brian E. Edwards, Antonio Sanchez, Tso Yee Fan and David L. Spears,Laser Radar Component Technology, Proceedings of the IEEE, vol. 84, No. 2, (Feb., 1996).
Jerome Faist, Frederico Capasso, Deborah L. Sivco, Carlo Sirtori, Albert L. Hutchinson, Alfred Y. Cho,Quantum Cascade Laser, Science, vol. 264, pp. 553-556 (Apr. 22, 1994).
C. C. Barron, C. J. Mahon, B. J. Thibeault, G. Wang, W. Jiang, L. A. Coldren and J. E. Bowers,Resonant-cavity-enhancedpinphotodetector with 17GHz bandwidth-efficiency product, Electronics Letters, vol. 30, No. 21, pp. 1796-1797 (Oct. 13, 1994).
T. Wipiejewski, K. Panzlaff, K. J. Ebeling,Resonant wavelength selective photodetectors, Microelectronic Engineering, vol. 19, pp. 223-226 (1992).
Lockheed Martin Corporation
Sadacca Stephen S.
Sedighian M. R.
Sidley Austin Brown & Wood LLP
LandOfFree
Multi-wavelength high bandwidth communication receiver and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multi-wavelength high bandwidth communication receiver and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-wavelength high bandwidth communication receiver and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3373346