Patent
Optical telecommunications system using code division multiple access
Charles A. Brackett,Jawad A. Salehi,Andrew M. Weiner +2 more
- 22 Jun 1987
75
TL;DR: In this article, the Fourier components of radiation pulses produced in a first specific subscriber station are independently phase modulated in accordance with a predetermined code chosen so that the radiation pulse can be detected only in a second specific user station.
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Abstract: The present invention is an optical telecommunications system capable of setting up connections between particular pairs of subscriber stations. Illustratively, the Fourier components of radiation pulses produced in a first specific subscriber station are independently phase modulated in accordance with a predetermined code chosen so that the radiation pulse can be detected only in a second specific subscriber station.
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Citations
Temporal imaging with a time lens
Brian H. Kolner,Moshe Nazarathy +1 more
TL;DR: It should become possible, with a temporal microscope, to expand ultrafast optical phenomena to a time scale that is accessible to conventional high-speed photodiodes.
425
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Multi-wavelength cross-connect optical switch
Olav Solgaard,Amal R. Bhattarai +1 more
- 08 Feb 2001
TL;DR: In this paper, a cross-connect switch for fiber-optic communication networks employing a wavelength dispersive element, such as a grating, and a stack of regular (non-wavelength selective) cross bar switches using two-dimensional arrays of micromachined, electrically actuated, individually-tiltable, controlled deflection micro-mirrors for providing multiport switching capability for a plurality of wavelengths.
357
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Control system and apparatus for use with ultra-fast laser
Marcos Dantus,Igor Pastirk,Vadim V. Lozovoy,Matthew Comstock +3 more
- 07 Jul 2006
TL;DR: In this paper, a control system and apparatus for use with an ultra-fast laser is described, which includes a laser, pulse shaper, detection device and control system, and a multiphoton intrapulse interference method is used to characterize the spectral phase of laser pulses.
223
Patent
Method and system for detecting optical faults within the optical domain of a fiber communication network
Shoa-Kai Liu
- 28 Dec 1995
TL;DR: In this paper, a method and system for detecting optical signal degradation or loss within the optical domain of a fiber network is proposed, where the optical signals for fault detection are broadcast or switched through working and/or spare fibers.
221
Patent
Interferometric quantum cryptographic key distribution system
Charles H. Bennett
- 25 May 1993
TL;DR: In this article, an apparatus and method for distributing cryptographic key information was described incorporating a quantum channel for conveying dim and reference light pulses, a timing channel, a source of coherent light pulses and beamsplitters, a random number generator, a phase modulator and a memory for recording the phase of transmitted dim light pulses.
172
References
Optical pulse compression with diffraction gratings
TL;DR: In this paper, the theory of the diffraction grating pair was developed by expanding the frequency dependence of the phase shift as far as the quadratic frequency term, and the analogy between pulse compression and Fresnel diffraction was treated.
1.5K
Patent
Apparatus and systems using broad band radiation pulse source
Jones Robert Patrick,Rentzepis Peter Michael +1 more
- 09 May 1973
TL;DR: In this paper, a mode-locked laser pulse is passed through high Raman coefficient media in which a variety of Stokes and anti-Stokes frequency transitions result, and the exiting pulse, which may have an envelope of the same order of magnitude time duration, contains a virtual continuum of wavelengths.
28
Patent
Address interrupt and current status display
J Odom
- 10 May 1973
TL;DR: In this article, a signaling system located at a central station sequentially interrogates a plurality of remotely located transponders, and means for interrupting the normal addressing sequence and for interrogating any particular remote station, and for then displaying the current status of such station.
19