Optical data communication system

• US 4,090,067 A
• Filed: 11/02/1976
• Issued: 05/16/1978
• Est. Priority Date: 11/02/1976
• Status: Expired due to Term

• Current Assignee: Sperry Rand Corporation
• Original Assignee: Sperry Rand Corporation
• Inventors: Rubin, William L., Cox, Lamar, Bell, William W. III
• Primary Examiner(s): Murray, Richard
• Application Number:
  US05/737,863
• Time in Patent Office: 560 Days
• Field of Search: 250/199
• US Class Current: 398/116
• CPC Class Codes: H04B 10/1125 using a single common optical path

Abstract

An optical communication system is disclosed wherein a multiplicity of stations in a linear, random, or grid arrangement are coupled in a party-line type network in which optical signals originated by a master or responding station are relayed from station to station. Coupling between stations may be accomplished by means of optical lenses, the focal regions of which are coupled to electronic equipments that may be remotely located therefrom. This electronic equipment detects received optical signals, regenerates and retransmits these received optical signals, and originates a responding optical signal to the master station when the received optical signal is addressed to the receiving station.

Claims

1. An optical communications system comprising:

a multiplicity of stations at least one of which is a master station, each having a predetermined address coded signal designated thereto;

means at each of said stations for coupling said stations to stations adjacent thereto;

means remotely located from said coupling means at each of said stations for generating optical signals for transmission to said adjacent stations in response to an optical signal received from one of said adjacent stations, and for generating electrical signals when said predetermined address coded signal is received; and

an optical fiber bundle wherein optical fibers are interleaved to couple optical signals received at said coupling means from adjacent stations to said receiver-generator means and to couple signals from said receiver-generator means to said coupling means for transmission to adjacent stations.

2. An optical communications system in accordance with claim 1 wherein said receiver-generator means includes means for preventing the reception of a second optical signal for a predetermined period after the generation of an optical signal in response to the reception of a first optical signal.

3. An optical communications system in accordance with claim 1 wherein said coupling means comprises a multiplicity of means for focussing optical energy to a predetermined focal region and for transmitting optical energy emanating from said focal region in a preselected direction, each of said focal regions being coupled to said receiver-generator means by said optical fiber bundle.

4. An optical communications system in accordance with claim 3 further including means coupled to each of said optical focussing means for aligning each of said optical focussing means with an adjacent complementary focussing means.

5. An optical communications system in accordance with claim 4 wherein an optical fiber bundle positioning means is coupled to said optical fiber bundle at each of said focal regions for positioning said optical fiber bundle thereto to provide for a fine alignment of said optical focussing means with said adjacent complementary focussing means.

6. An optical communications system in accordance with claim 3 wherein an optical retrodirective means is attached to said adjacent complementary focussing means whereby an optical signal radiated from said optical focussing means illuminates said optical retrodirective means causing an optical signal to be returned thereto, said optical focussing means being then positioned until said returned signal is maximized, thereby establishing the alignment of said optical focussing means and said adjacent complementary focussing means.

7. An optical communications system in accordance with claim 1 wherein said coupling means comprises means coupled to said optical fiber bundle for guiding optical signals between said receiver-generator means at one station of said multiplicity of stations and said receiver-generator means at stations adjacent thereto.

8. An optical communications system in accordance with claim 7 wherein said receiver-generator means comprises:

means responsive to optical signals coupled from said optical signal guiding means for converting optical signals to electrical signals; and

means responsive to electrical signals coupled from said optical-electrical converter means for converting electrical signals to optical signals, which are thereafter coupled to said optical signal guiding means.

9. An optical communications system in accordance with claim 8 further including means coupled between said electrical-optical converter means and said optical-electrical converter means for preventing said optical-electrical converter means from responding to a second received optical signal for a predetermined period after said electrical-optical converter means has generated an optical signal in response to an electrical signal coupled from said optical-electrical converter means in response to a first received optical signal.

10. An optical communications system in accordance with claim 3 wherein said receiver-generator means comprises:

means coupled to said focal region of each of said multiplicity of said optical energy focussing means for converting optical signals illuminating said focal region to electrical signals; and

means coupled to receive said electrical signal from said optical-electrical converter means for converting said electrical signals to optical signals which are coupled by said optical fiber bundle to said focal region of each of said multiplicity of said optical energy focussing means.

11. An optical communications system in accordance with claim 10 further including means coupled between said electrical-optical converter means and said optical-electrical converter means for preventing said optical-electrical converter means from responding to a second received optical signal for a predetermined period after said electrical-optical converter means has generated an optical signal in response to an electrical signal coupled from said optical-electrical converter means in response to a first received optical signal.