Optical: systems and elements – Optical modulator
Patent
1995-06-13
1997-03-04
Hellner, Mark
Optical: systems and elements
Optical modulator
359126, 359154, H04B 10207
Patent
active
056085656
ABSTRACT:
In a bidirectional optical transmission system between an optical subscriber unit (10; OSU) in a central office and a plurality of optical network units (20A.sub.i ; ONU) in customer premises each coupled with the subscriber unit (10) through an optical fiber cable, the optical subscriber unit (10) has a laser oscillator (11), a device (12) for splitting an output beam of the laser oscillator into n number of beams, a plurality of optical modulators (13-1 through 13-n), coupled with each of the n number of beams, for modulating a related optical beam with a transmission signal S for a respective optical network unit, a plurality of optical detectors (14-1 through 14-n) coupled with each of the optical network units to provide a receive signal R by converting the receive optical signal into electrical form. Each pair of one of the optical modulators and one of the optical detectors are coupled with a respective optical network unit through an optical fiber cable (5-1, 5-2). Each of the optical network units (20-1 through 20-n) has a device for receiving the optical signal from the ONU, to convert the receive optical beam into the electrical signal and for transmitting the optical signal modulated with the transmission signal to the ONU.
REFERENCES:
patent: 4642804 (1987-02-01), Personick
patent: 4658394 (1987-04-01), Cheng et al.
patent: 4910726 (1990-03-01), Stanley
patent: 5440415 (1995-08-01), Mekawi et al.
"Ultra-High-Splitting-Ratio Subscriber Loops for Small Capacity Services", Maekawa et al, Technical Report of IEICE, OCS94-64, OPE94-87 (1994-11), pp. 19-24.
"Fiber-Optic Subsciber System Based on Passive Optical Network Architecture," 8297 Hitachi Review, 43 (1994) Apr., No. 2, Tokyo, Japan, pp. 53-58.
Kumozaki Kiyomi
Suzuki Yasuhiro
Watanabe Ryu-ichi
Hellner Mark
Nippon Telegraph and Telephone Corporation
LandOfFree
Bidirectional optical transmission system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bidirectional optical transmission system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bidirectional optical transmission system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2150732