Wireless/Optical Transceiver Devices

• US 20080031628A1
• Filed: 04/28/2005
• Published: 02/07/2008
• Est. Priority Date: 05/01/2004
• Status: Abandoned Application

• Current Assignee: University of Bristol
• Original Assignee: University of Bristol
• Inventors: Cryan, Martin, Dragas, Milan
• Application Number:
  US11/587,366
• Publication Number:
  US 20080031628A1
• Time in Patent Office: Days
• US Class Current: 398/116
• CPC Class Codes: H04B 10/25752 Optical arrangements for wireless networks

Abstract

An optical/wireless transceiver device is operable to convert an input optical signal to an outgoing radio frequency signal, and to convert an incoming radio frequency signal to an output optical signal.

Claims

1. An optical/wireless transceiver device comprising circuitry operable to convert an input optical signal to an outgoing radio frequency signal, and to convert an incoming radio frequency signal to an output optical signal.

2. An optical/wireless transceiver device as claimed in claim 1, comprising:

a planar transmit antenna for transmission of an outgoing radio frequency signal;

a photodiode device connected to receive an input optical signal, and operable to supply a radio frequency signal to the transmit antenna;

a planar receive antenna for reception of an incoming radio frequency signal;

a semiconductor laser device connected to receive an incoming radio frequency signal from the receive antenna, and operable to produce a modulated output optical signal in dependence upon the incoming radio frequency signal.

3. An optical/wireless transceiver device as claimed in claim 1, comprising:

a planar antenna for transmission of an outgoing radio frequency signal and reception of an incoming radio frequency signal;

a photodiode device connected to receive an input optical signal, and operable to supply a radio frequency signal to the antenna; and

a semiconductor laser device connected to receive an incoming radio frequency signal from the antenna, and operable to produce a modulated output optical signal in dependence upon the incoming radio frequency signal.

4. A device as claimed in claim 3, wherein the photodiode device is connected to supply the outgoing radio frequency signal to the antenna in a first axis of polarisation of the antenna, and the laser device is connected to receive the incoming radio frequency signal in a second axis of polarisation of the antenna.

5. A device as claimed in claim 4, wherein the first and second axes of polarisation of the antenna are mutually perpendicular.

6. A device as in claim 3, wherein the semiconductor laser device is chosen from a group comprising a vertical cavity semiconductor laser VCSEL device, and a semiconductor edge emitting laser EEL device.

7. An optical/wireless transceiver device as claimed in claim 1, comprising:

a planar antenna for transmission of an outgoing radio frequency signal and reception of an incoming radio frequency signal; and

a dual purpose vertical cavity semiconductor laser device connected to receive an incoming radio frequency signal from the antenna, and operable to produce a modulated output optical signal in dependence upon the incoming radio frequency signal, and connected to receive an input optical signal and operable to supply an outgoing radio frequency signal to the antenna.

8. A device as in claim 2, wherein the antenna is chosen from a group comprising a microstrip patch antenna, a slot-ring antenna, a ring antenna, and a planar dipole antenna.

9. A device as in claim 3, further comprising a substrate on which the antenna and the device are mounted.

10. A device as claimed in claim 9, wherein the antenna is mounted on a first side of the substrate, and the device is mounted on a second different, side of the substrate.

11. A device as in claim 10 wherein the substrate is formed of a semiconductor material.

12. A device as claimed in claim 11, wherein the semiconductor material is chosen from a group comprising gallium arsenide, silicon, indium phosphide, silicon germanium, gallium nitride, and silicon carbide.

19. A transceiver device as in claim 3, comprising an optical device which is operable to receive an optical signal and to convert that optical signal to a supply current for any other optical device in the transceiver device.

20. A device as in claim 7, wherein the antenna is chosen from a group comprising a microstrip patch antenna, a slot-ring antenna, a ring antenna, and a planar dipole antenna.

21. A device as claimed in claim 8, further comprising a substrate on which the antenna and the device are mounted.

13. A radio frequency receiver device comprising a semiconductor laser device having a metal electrode, wherein the metal electrode provides an antenna of the receiver device.

14. A device as claimed in claim 13, wherein the metal electrode is operable to receive an incoming radio frequency signal, and is connected to modulate an optical output of the laser device in dependence upon a received radio frequency signal.

15. A device as in claim 13, wherein the semiconductor laser device is chosen from a group comprising a vertical cavity semiconductor laser VCSEL device, a dual purpose vertical cavity semiconductor laser DP-VCSEL device, and an edge emitting laser EEL device.

16. A radio frequency transmitter device comprising an optical component having a metal electrode, wherein the metal electrode provides an antenna of the transmitter device.

17. A device as claimed in claim 16, wherein the optical component is connected to receive an input optical signal, and is operable to transmit an outgoing radio frequency signal from the metal electrode.

18. A device as in claim 16, wherein the optical component is chosen from a group comprising a photodiode, and a dual purpose vertical cavity semiconductor laser DP-VCSEL device.