公开(公告)号：JP2001077795A

公开(公告)日：2001-03-23

申请号：JP2000236353

申请日：2000-08-04

Applicant: LUCENT TECHNOLOGIES INC

Inventor： VENKATARAMAN SUWAMINASAN ,  PARK YONG-KWAN ,  CHAND NARESH ,  DAUGHERTY THOMAS HENRY ,  MUYS WOULTERUS

IPC: H04N7/22 ,  H04B10/272 ,  H04B10/50 ,  H04J14/00 ,  H04J14/02 ,  H04J14/04 ,  H04J14/06

Abstract: PROBLEM TO BE SOLVED: To obtain a system capable of distributing an additional band width exceeding 1 Gbps to each subscriber by optically combining a base band signal and a pass band signal and transmitting the combined signal through a common optical fiber. SOLUTION: A system 30 is provided with a first light transmitter 40 for responding to an inputted electric base band signal from a base band source 28 and a second light transmitter 41 for responding to an inputted electric pass band signal from a pass band source 29. The transmitters 40 and 41 separately generate optical signals including information on the inputted signal of each. Next, an optical coupler such as an optical power coupler 42 optically combines the optical signals to transmit the combined optical signals to a light receiver 35, which is capable of detecting and demodulating both of the base band signal and the pass band signal. The receiver 35 is also capable of executing the electricity/light conversion of the pass band signal deeper in a network to allow a central station to provide an optical pass band signal.

公开(公告)号：DE60034281T2

公开(公告)日：2007-12-20

申请号：DE60034281

申请日：2000-07-24

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CHAND NARESH ,  DAUGHERTY THOMAS HENRY ,  MUYS WOULTERUS ,  PARK YONG-KWAN ,  SWAMINATHAN VENKATARAMAN

IPC: H04N7/22 ,  H04B10/272 ,  H04B10/50 ,  H04J14/00 ,  H04J14/02 ,  H04J14/04 ,  H04J14/06

Abstract: A new communication system in which multichannel broadcast digital services are distributed to each user with the broadcast services signal riding in the passband above a digital baseband signal, can deliver more than 1 Gbps additional bandwidth to each subscriber. The passband bandwidth will accommodate growth in downstream services including video on demand, higher speed web downloads including improved streaming audio and video, HDTV, interactive video, and personalized video. The invention requires only a single fiber path and a single optical receiver for each user or group of users. A single fiber, single optical receiver system is much less expensive than two systems, one transmitting baseband and the other passband. A single receiver is greatly cost beneficial to achieving economical fiber to the home.

公开(公告)号：CA2314854A1

公开(公告)日：2001-02-06

申请号：CA2314854

申请日：2000-08-02

Applicant: LUCENT TECHNOLOGIES INC

Inventor： SWAMINATHAN VENKATARAMAN ,  DAUGHERTY THOMAS HENRY ,  CHAND NARESH ,  MUYS WOUTERUS ,  PARK YONG-KWAN

IPC: H04N7/22 ,  H04B10/272 ,  H04B10/50 ,  H04J14/00 ,  H04J14/02 ,  H04J14/04 ,  H04J14/06 ,  H04B10/02

Abstract: The present invention relates to an optical communication system for transmitting both baseband and passband signals on a common optical transmission path. The system is comprised of a source of an electrical baseband signal a nd a source of an electrical passband signal modulated for digital broadcast services. A first optical transmitter is provided that is responsive to the electrical baseband signal for generating an optical baseband signal. A second optical transmitt er is provided that is responsive to the electrical passband signal for generating an optical passband signal. An optical combiner is optically coupled to the transmitter s for combining the optical baseband and passband signals into a combined optical signal. An optical transmission path is provided optically coupled to the combiner for transmitting the combined optical signal. An optical receiver is optically coupled to the transmission path for receiving transmitted optical signals.

公开(公告)号：DE60034281D1

公开(公告)日：2007-05-24

申请号：DE60034281

申请日：2000-07-24

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CHAND NARESH ,  DAUGHERTY THOMAS HENRY ,  MUYS WOULTERUS ,  PARK YONG-KWAN ,  SWAMINATHAN VENKATARAMAN

IPC: H04N7/22 ,  H04B10/272 ,  H04B10/50 ,  H04J14/00 ,  H04J14/02 ,  H04J14/04 ,  H04J14/06

Abstract: A new communication system in which multichannel broadcast digital services are distributed to each user with the broadcast services signal riding in the passband above a digital baseband signal, can deliver more than 1 Gbps additional bandwidth to each subscriber. The passband bandwidth will accommodate growth in downstream services including video on demand, higher speed web downloads including improved streaming audio and video, HDTV, interactive video, and personalized video. The invention requires only a single fiber path and a single optical receiver for each user or group of users. A single fiber, single optical receiver system is much less expensive than two systems, one transmitting baseband and the other passband. A single receiver is greatly cost beneficial to achieving economical fiber to the home.

公开(公告)号：CA2314854C

公开(公告)日：2005-05-10

申请号：CA2314854

申请日：2000-08-02

Applicant: LUCENT TECHNOLOGIES INC

Inventor： SWAMINATHAN VENKATARAMAN ,  MUYS WOUTERUS ,  CHAND NARESH ,  PARK YONG-KWAN ,  DAUGHERTY THOMAS HENRY

IPC: H04N7/22 ,  H04B10/272 ,  H04B10/50 ,  H04J14/00 ,  H04J14/02 ,  H04J14/04 ,  H04J14/06 ,  H04B10/02

Abstract: The present invention relates to an optical communication system for transmitting both baseband and passband signals on a common optical transmission path. The system is comprised of a source of an electrical baseband signal a nd a source of an electrical passband signal modulated for digital broadcast services. A first optical transmitter is provided that is responsive to the electrical baseband signal for generating an optical baseband signal. A second optical transmitt er is provided that is responsive to the electrical passband signal for generating an optical passband signal. An optical combiner is optically coupled to the transmitter s for combining the optical baseband and passband signals into a combined optical signal. An optical transmission path is provided optically coupled to the combiner for transmitting the combined optical signal. An optical receiver is optically coupled to the transmission path for receiving transmitted optical signals.

公开(公告)号：CA2291917A1

公开(公告)日：2000-06-16

申请号：CA2291917

申请日：1999-12-07

Applicant: LUCENT TECHNOLOGIES INC

Inventor： SWAMINATHAN VENKATARAMAN ,  MAGILL PETER D ,  CHAND NARESH ,  DAUGHERTY THOMAS HENRY

IPC: H04B10/50 ,  H04B10/516 ,  H04B10/556 ,  H04J1/00 ,  H04J14/02 ,  H04L27/18 ,  H04N7/22 ,  H04B10/20

Abstract: This invention is a new communication system in which multichannel broadcast digital services are distributed to each user with the broadcast video signal riding in the passband above a digital baseband signal. The system can deliver more than 1 Gbps additional bandwidth to each subscriber. The passband bandwidth will accommodate growth in downstream services including video on demand, higher speed web downloads including improved streaming audio and video, HDTV, interactive video, and personalized video. The invention requires only a single transmitter, a single transmission fiber and a single receiver for each user. A single transmitter, single fiber, single receiver system is much less expensive than two systems, one transmitting baseband and the other passband. A single receiver is greatly cost beneficial to achieving an economical fiber to the home solution where equipment at the end user location is not shared among multiple end users. In an exemplary embodiment, an optical communication system comprises a diplexer for electronically combining the baseband and passband signals, a digital laser transmitter for generating an optical signal containing the combined signals, a length of optical transmission fiber for transmitting the optical signal, and, for each user or group of users, an optical receiver coupled to the fiber.