Bidirectional data communications cable

• US 9,979,481 B2
• Filed: 11/06/2017
• Issued: 05/22/2018
• Est. Priority Date: 04/14/2014
• Status: Active Grant

• Current Assignee: Mobix Labs, Inc.
• Original Assignee: Cosemi Technologies
• Inventors: Parekh, Devang, Nguyen, Nguyen X.
• Primary Examiner(s): Sedighian, M. R.
• Application Number:
  US15/804,998
• Publication Number:
  US 20180062742A1
• Time in Patent Office: 197 Days
• Field of Search: 385 17
• CPC Class Codes: G02B 6/3546 NxM switch, i.e. a regular array of switches elements of matrix type constellation
• CPC Class Codes: G02B 6/3588 of the processed beams, i.e. controlling during switching of orientation, alignment, or beam propagation properties such as intensity, size or shape
• CPC Class Codes: G02B 6/4246 Bidirectionally operating package structures
• CPC Class Codes: G02B 6/4292 the light guide being disconnectable from the opto-electronic element, e.g. mutually self aligning arrangements
• CPC Class Codes: G02B 6/43 Arrangements comprising a plurality of opto-electronic elements and associated optical interconnections
• CPC Class Codes: H04B 10/2589 Bidirectional transmission
• CPC Class Codes: H04B 10/25891 Transmission components H04B10/40 takes precedence
• CPC Class Codes: H04B 10/40 Transceivers
• CPC Class Codes: H04Q 11/0005 Switch and router aspects
• CPC Class Codes: H04Q 2011/0035 using miscellaneous components, e.g. circulator, polarisation, acousto/thermo optical

Abstract

A bidirectional data communications cable is disclosed. The cable includes first connector, second connector, and cable housing coupled to the first and second connectors. The first connector includes a controller configured to determine whether the first connector is connected to a data source or data sink. If connected to a data source, the controller configures a switch circuit to route a data signal from the data source to an optical modulator for modulating an optical signal for transmission from the first to the second connector via an optical fiber. If connected to a data sink, the controller configures the switch circuit to route a data signal from an optical demodulator to the data sink, the optical demodulator receiving an optical signal modulated with the data signal from the second connector via an optical fiber. The second connector is configured similar to the first connector. The cable housing encloses the optical fibers.

Claims

1. A data communications cable, comprising:

a first connector configured to mate with a corresponding connector of a data source or a data sink;

a first modulator configured to modulate a first optical signal with a first data signal if the first connector is mated with the corresponding connector of the data source;

a first demodulator configured to demodulate a second optical signal to produce a second data signal if the first connector is mated with the corresponding connector of the data sink;

a first switch circuit configured to;

route the first data signal from the data source to the first modulator if the first connector mated with the corresponding connector of the data source;

or

route the second data signal from the first demodulator to the data sink if the first connector is connected to the corresponding connector of the data sink;

a second connector configured to mate with a corresponding connector of the data source or the data sink;

a second modulator configured to modulate the second optical signal with the second data signal if the second connector is mated with the corresponding connector of the data source;

a second demodulator configured to demodulate the first optical signal to produce the first data signal if the second connector is mated with the corresponding connector of the data sink;

a second switch circuit configured to;

route the second data signal from the data source to the second modulator if the second connector is mated with the corresponding connector of the data source;

or

route the first data signal from the second demodulator to the data sink if the second connector is mated with the corresponding connector of the data sink; and

a set of optical fibers configured to;

route the first modulated optical signal from the first connector to the second connector if the first connector is mated with the corresponding connector of the data source and the second connector is mated with the corresponding connector of the data sink;

or

route the second modulated optical signal from the second connector to the first connector if the second connector is mated with the corresponding connector of the data source and the first connector is mated with the corresponding connector of the data sink.

2. The data communications cable of claim 1, further comprising a controller configured to:

determine whether the first connector is connected to the data source or the data sink; and

configure the first switch circuit based on said determination.

3. The data communications cable of claim 2, wherein the controller is configured to determine whether the first connector is connected to the data source or the data sink based on a user input.

4. The data communications cable of claim 2, wherein the controller is configured to determine whether the first connector is connected to the data source or the data sink based on signal activity at one or more contacts of the first connector, at one or more contacts of the second connector, or at both the one or more contacts of the first connector and the one or more contacts of the second connector.

5. The data communications cable of claim 2, wherein the controller is configured to determine whether the first connector is connected to the data source or the data sink based on a control signal received by way of one or more contacts of the first connector, one or more contacts of the second connector, or both the one or more contacts of the first connector and the one or more contacts of the second connector.

6. The data communications cable of claim 1, wherein the first modulator comprises:

a transmitter circuit configured to generate a modulating signal based on the first data signal; and

a laser source configured to generate the first modulated optical signal based on the modulating signal.

7. The data communications cable of claim 1, wherein the first modulator comprises:

a transmitter circuit configured to generate a modulating signal based on the first data signal;

a multiplexer configured to generate a multiplexed modulating signal based on the modulating signal; and

a laser source configured to generate the first modulated optical signal based on the multiplexed modulating signal.

8. The data communications cable of claim 1, wherein the first demodulator comprises:

a photo detector circuit configured to generate an electrical signal based on the second modulated optical signal; and

a receiver circuit configured to generate the second data signal based on the electrical signal.

9. The data communications cable of claim 1, wherein the first demodulator comprises:

a photo detector circuit configured to generate an electrical signal based on the second modulated optical signal;

a demultiplexer configured to generate a demultiplexed signal based on the electrical signal; and

a receiver circuit configured to generate the second data signal based on the demultiplexed signal.

10. The data communications cable of claim 1, further comprising a controller is configured to:

determine whether the second connector is connected to the data source or the data sink; and

configure the second switch circuit based on said determination.

11. The data communications cable of claim 10, wherein the controller is configured to determine whether the second connector is connected to the data source or the data sink based on a user input.

12. The data communications cable of claim 10, wherein the controller is configured to determine whether the second connector is connected to the data source or the data sink based on signal activity at one or more contacts of the second connector, at one or more contacts of the first connector, or at both the one or more contacts of the second connector and the one or more contacts of the first connector.

13. The data communications cable of claim 10, wherein the controller is configured to determine whether the second connector is connected to the data source or the data sink based on a control signal received by way of one or more contacts of the second connector, one or more contacts of the first connector, or both the one or more contacts of the second connector and the one or more contacts of the first connector.

14. The data communications cable of claim 1, wherein the second modulator comprises:

a transmitter circuit configured to generate a modulating signal based on the second data signal; and

a laser source configured to generate the second modulated optical signal based on the modulating signal.

15. The data communications cable of claim 1, wherein the second modulator comprises:

a transmitter circuit configured to generate a modulating signal based on the second data signal;

a multiplexer configured to generate a multiplexed modulating signal based on the modulating signal; and

a laser source configured to generate the second modulated optical signal based on the multiplexed modulating signal.

16. The data communications cable of claim 1, wherein the second demodulator comprises:

a photo detector circuit configured to generate an electrical signal based on the first modulated optical signal; and

a receiver circuit configured to generate the first data signal based on the electrical signal.

17. The data communications cable of claim 1, wherein the second demodulator comprises:

a photo detector circuit configured to generate an electrical signal based on the first modulated optical signal;

a demultiplexer configured to generate a demultiplexed signal based on the electrical signal; and

a receiver circuit configured to generate the first data signal based on the demultiplexed signal.

18. The data communications cable of claim 1, further comprising:

one or more wires; and

a transceiver configured to;

receive a first control signal from the data source or the data sink by way of one or more contacts of the first connector;

generate a first transmit signal based on the first control signal for transmission to the second connector by way of the one or more wires;

receive a second transmit signal from the second connector by way of the one or more wires; and

generate a second control signal based on the second transmit signal for providing to the data source or the data sink by way of the one or more contacts of the first connector.

19. The data communications cable of claim 1, further comprising:

one or more wires; and

a transceiver configured to;

receive a first control signal from the data source or the data sink by way of one or more contacts of the second connector;

generate a first transmit signal based on the first control signal for transmission to the first connector by way of the one or more wires;

receive a second transmit signal from the first connector by way of the one or more wires; and

generate a second control signal based on the second transmit signal for providing to the data source or the data sink by way of the one or more contacts of the second connector.

20. The data communications cable of claim 1, further comprising:

a second set of one or more optical fibers;

a transceiver configured to;

receive a first control signal from the data source or the data sink by way of one or more contacts of the first connector;

generate a third modulated optical signal based on the first control signal for transmission to the second connector by way of the second set of one or more optical fibers;

receive a fourth modulated optical signal from the second connector by way of the second set of one or more optical fibers; and

generate a second control signal based on the fourth modulated optical signal for providing to the data source or the data sink by way of the one or more contacts of the first connector.

21. The data communications cable of claim 1, further comprising:

a second set of one or more optical fibers;

a transceiver configured to;

receive a first control signal from the data source or the data sink by way of one or more contacts of the second connector;

generate a third modulated optical signal based on the first control signal for transmission to the first connector by way of the second set of one or more optical fibers;

receive a fourth modulated optical signal from the first connector by way of the second set of one or more optical fibers; and

generate a second control signal based on the fourth modulated optical signal for providing to the data source or the data sink by way of the one or more contacts of the second connector.

22. The data communications cable of claim 1, further comprising a cable housing including opposite ends mechanically coupled or attached to the first and second connectors, respectively, wherein the cable housing at least partially encloses the set of optical fibers.