Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Patent
1988-02-04
1990-05-22
Griffin, Robert L.
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
455608, 455617, H04B 900
Patent
active
049283162
ABSTRACT:
A communications systems is characterized by a pulse-shaping technique for producing shaped, stabilized, ultra-short (picosecond to femtosecond) pulses containing encoded information. Pulse shaping is accomplished by temporally stretching and chirping an ultra-short pulse from a pulse generator, modulating the pulse in real time and temporally compressing the pulse in a manner so as to cancel the original chirp.
REFERENCES:
patent: 3530298 (1970-09-01), Hubbard
patent: 4655547 (1987-04-01), Heritage et al.
J. A. Valdmanis, 1986 Proceedings of the Fifth OSA Topical Meeting on Ultrafast Phenomena, edited by G. R. Fleming and A. E. Siegman and entitled "Real Time Picosecond Optical Oscilloscope".
S. K. Korotky et al., "Optical Modulation Above 20 GHz Using Waveguide Electro-Optic Switch," paper FB-4, Picosecond Electronics and Optoelectronics Conference Digest, Jan. 14-16, Incline Village, Nevada, 1987.
J. Agostinelli et al., "Optical Pulse Shaping with a Grating Pair," Applied Optics, vol. 18 (14), Jul. 15, 1979, pp. 2500-2504.
M. Haner et al., "Generation of Programmable, Picosecond-Resolution Shaped Laser Pulses by Fiber-Grating Pulse Compression," Optics Letters, 12 (6), Jun. 1987.
M. Pessot et al., "1000 Times Expansion/Compression of Optical Pulses for Chirped Pulse Amplification," Optics Communications, 62 (6), Jun. 1987.
O. E. Martinez, "3000 Times Grating Compressor with Positive Group Velocity Dispersion: Application to Fiber Compensation in 1.3-1.6 m Region," IEEE J. Quantum Electronics, QE-23, 59-64, Jan. 1987.
E. B. Treacy, "Optical Pulse Compression with Diffraction Gratings," IEEE J. of Quantum Electronics, QE-5, 454-458 (1969).
D. Strickland et al., "Compression of Amplified Chirped Optical Pulses," Optics Communications, 56 (3), 219-221 (1985).
N. Nakatuska et al., "Nonlinear Picosecond Pulse Propagation Through Optical Fibers with Positive Group Velocity Dispersion," Physics Review Letters, 47, 910-913 (1981).
Weik, Communications Standard Dictionary, Definition of Chirp, Pulse Frequency Modulation and Source Chip.
Weiner et al., "Frequency Domain Coding of Femtosecond Pulses for Spread Spectrum Communications", Conference on Laser and Electro Optics, May 87, pp. 294-296.
Brodkner, "Phased Array Radar," Scientific American 252, pp. 94-102, 1985.
Schmid, LLE Report, "Short Pulse Amplification Using Pulse Compression Techniques", vol. 25, pp. 42-46, Oct.-Dec. 1985.
Tomlinson, "Compression of Optical Pulses Chirped by Self Phase Modulation in Fibers", Journal of Optical Society, vol. 1, #2, pp. 139-149, Apr. 84.
Heritage Jonathan P.
Weiner Andrew M.
Beek L. Van
Bell Communications Research Inc.
Falk James W.
Griffin Robert L.
LandOfFree
Optical systems and methods based upon temporal stretching, modu does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical systems and methods based upon temporal stretching, modu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical systems and methods based upon temporal stretching, modu will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2139646