Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1996-03-29
1998-03-10
Negash, Kinfe-Michael
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359130, 359133, 359179, 385 24, H04J 1402
Patent
active
057267847
ABSTRACT:
A WDM optical communication system is described which is capable of placing information from incoming information-bearing optical signals onto N optical signal channels for conveyance over an optical waveguide. The optical system includes a first set of one or more optical transmitters, each of which emits an information-bearing optical signal at one or more transmission wavelengths, .lambda..sub.Ti. At least M optical receiving systems are provided, each receiving system configured to receive an information-bearing optical signal at a particular reception wavelength .lambda..sub.j, where M is a whole number greater than or equal to N and j is from 1 to M. Each receiving system includes at least one Bragg grating member for selecting the particular reception wavelength .lambda..sub.j. An optical waveguide optically communicates with each of the M receiving systems for transmitting a plurality of optical signals. A plurality of optical remodulators is further included for communicating with the first set of optical transmitters and the optical waveguide. Each optical remodulator is configured to receive an information-bearing optical signal at a transmission wavelength .lambda..sub.Ti and output an information-bearing optical signal at a reception wavelength .lambda..sub.j. A second set of one or more optical transmitters is also provided, each of which emitting a
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patent: 4933929 (1990-06-01), Tajima
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patent: 5483372 (1996-01-01), Green, Jr.
patent: 5504609 (1996-04-01), Alexander et al.
patent: 5532864 (1996-07-01), Alexander et al.
Alexander Stephen B.
Chaddick Steve W.
Huber David R.
Smith Cecil D.
Burke Margaret
Ciena Corp.
Negash Kinfe-Michael
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