System and method for propagating satellite TV-band, cable TV-band, and data signals over an optical network

• US 20060020975A1
• Filed: 07/01/2005
• Published: 01/26/2006
• Est. Priority Date: 07/05/2001
• Status: Abandoned Application

• Current Assignee: Enablence USA Fttx Networks, Inc. (Enablence Technologies Incorporated)
• Original Assignee: Wave7 Optics, Inc. (Enablence Technologies Incorporated)
• Inventors: Whittlesey, Paul, Kenny, John, Farmer, James
• Application Number:
  US11/173,940
• Publication Number:
  US 20060020975A1
• Time in Patent Office: Days
• US Class Current: 725/63
• CPC Class Codes: H04B 10/25751 Optical arrangements for CATV or video distribution adaptations of television systems for optical transmission H04N7/22
• CPC Class Codes: H04J 14/0232 for downstream transmission
• CPC Class Codes: H04J 14/0247 Sharing one wavelength for at least a group of ONUs
• CPC Class Codes: H04J 14/0252 Sharing one wavelength for at least a group of ONUs, e.g. for transmissions from-ONU-to-OLT or from-ONU-to-ONU
• CPC Class Codes: H04J 14/0282 WDM tree architectures
• CPC Class Codes: H04J 14/0298 with sub-carrier multiplexing [SCM]
• CPC Class Codes: H04N 2007/1739 the upstream communication being transmitted via a separate link, e.g. telephone line
• CPC Class Codes: H04N 21/2221 being a cable television head-end CATV in broadcast systems H04H20/78
• CPC Class Codes: H04N 21/2383 Channel coding or modulation of digital bit-stream, e.g. QPSK modulation arrangements for detecting or preventing errors in the information received by adapting the channel coding H04L1/0009; analogue front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002
• CPC Class Codes: H04N 21/2385 Channel allocation H04N21/266 takes precedence; Bandwidth allocation H04N21/24 takes precedence ; allocation of channels according to the instantaneous demands of the users in time-division multiplex systems H04J3/1682; admission control, resource allocation in open networks H04L12/5692; arrangements for maintenance or administration in data switching networks involving bandwidth and capacity management H04L41/0896; negotiating bandwidth in wireless networks H04W28/16
• CPC Class Codes: H04N 21/2665 Gathering content from different sources, e.g. Internet and satellite
• CPC Class Codes: H04N 21/42684 Client identification by a unique number or address, e.g. serial number, MAC address, socket ID network arrangements, protocols or services for addressing or naming H04L61/00
• CPC Class Codes: H04N 21/4436 Power management, e.g. shutting down unused components of the receiver power management in computer systems G06F1/3203; hibernate or awake process in computer systems G06F9/4418
• CPC Class Codes: H04N 21/6118 involving cable transmission, e.g. using a cable modem
• CPC Class Codes: H04N 21/6143 involving transmission via a satellite
• CPC Class Codes: H04N 21/6332 directed to client
• CPC Class Codes: H04N 7/20 Adaptations for transmission via a GHz frequency band, e.g. via satellite
• CPC Class Codes: H04N 7/22 Adaptations for optical transmission

Abstract

An optical network can include a data service hub, a laser transceiver node, and a subscriber optical interface. The data service hub can comprise a satellite antenna and a RF receiver for receiving satellite TV-band electrical signals. These electrical signals can be converted into the optical domain and then propagated over the optical network through optical waveguides to the subscriber optical interface. The subscriber optical interface can comprise an optical filter and a satellite analog optical receiver. The optical filter can separate the satellite TV-band optical signals having a first optical wavelength from other optical signals such as cable TV-band optical signals with a second optical wavelength and data optical signals with a third optical wavelength. The satellite analog optical receiver can further comprise various mechanisms for controlling access to the satellite TV-band signals.

Claims

1. A method for providing satellite TV-band signals and data services over an optical network comprising:

receiving the satellite TV-band signals from a satellite in an electrical domain;

receiving data signals in an electrical domain;

converting the satellite TV-band signals from the electrical domain to an optical domain at a first optical wavelength;

converting the data signals from the electrical domain to the optical domain at a second optical wavelength different from the first optical wavelength;

combining satellite TV-band optical signals with data optical signals for optical transmission;

separating the satellite TV-band optical signals from the data optical signals with an optical filter; and

converting the satellite TV-band optical signals from the optical domain to the electrical domain.

2. The method of claim 1, further comprising propagating the combined optical signals over a single optical waveguide.

3. The method of claim 1, further comprising combining satellite TV-band optical signals with cable TV-band optical signals prior to combining the satellite TV-band optical signals with the data optical signals.

4. The method of claim 1, wherein converting the satellite TV-band signals from an electrical domain to an optical domain at a first optical wavelength further comprises modulating an optical transmitter with the satellite TV-band signals.

5. The method of claim 1, wherein the data signals support at least one of telephony and computer services for a subscriber of the optical network.

6. The method of claim 1, wherein separating the satellite TV-band optical signals from the data optical signals with an optical filter further comprises filtering the satellite TV-band and cable TV-band optical signals with at least one of a bandpass filter and a band skip wavelength division multiplexer.

7. The method of claim 1, further comprising activating a switch to control access to the satellite TV-band signals.

8. The method of claim 1, further comprising monitoring a status of a switch to control access to the satellite TV-band signals.

17. The system of claim 1, wherein the subscriber optical interface further comprises a processor that is coupled to a service disconnect switch.

9. A method for providing satellite TV-band signals and cable TV-band services over an optical network comprising:

receiving the satellite TV-band electrical signals from a satellite antenna;

converting the satellite TV-band electrical signals into optical signals comprising a first optical wavelength;

modulating an optical carrier of a second optical wavelength with cable TV-band signals to form satellite TV-band optical signals;

combining satellite TV-band optical signals with the cable TV-band optical signals for optical transmission;

removing the satellite TV-band optical signals from the cable TV-band optical signals with an optical filter; and

converting the satellite TV-band optical signals from the optical domain to the electrical domain.

10. The method of claim 9, further comprising propagating the combined optical signals over a single optical waveguide.

11. The method of claim 9, further comprising combining the satellite TV-band optical signals and the cable TV-band optical signals with the data optical signals.

12. The method of claim 9, further comprising propagating the combined satellite TV-band and cable TV-band optical signals over a single optical waveguide.

13. The method of claim 9, further comprising controlling access to the satellite TV-band services with a remotely controlled switch disposed in a subscriber optical interface.

14. A system for providing satellite TV-band signals and cable TV-band services over an optical network comprising:

a satellite interface module for converting satellite TV-band optical signals into electrical signals and for separating the satellite TV-band optical signals from downstream cable TV-band optical signals and data optical signals; and

a subscriber optical interface coupled to the satellite interface for receiving and processing the downstream cable TV-band optical signals and data optical signals.

15. The system of claim 14, wherein the satellite interface module comprises an optical filter for separating the satellite TV-band optical signals from cable TV-band optical signals and data optical signals.

16. The system of claim 14, wherein the subscriber optical interface comprises an optical diplexer that is coupled to the satellite interface module, the subscriber optical interface further comprising an analog optical receiver.