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HIGH-BANDWIDTH UNDERWATER DATA COMMUNICATION SYSTEM

  • US 20170048005A1
  • Filed: 10/26/2016
  • Published: 02/16/2017
  • Est. Priority Date: 03/15/2013
  • Status: Active Grant
First Claim
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1. A system to optically transfer seismic data through an aqueous medium, comprising:

  • a retrieval device comprising a first optical transmitter to transmit light and a first optical receiver;

    an ocean bottom seismic (“

    OBS”

    ) node comprising;

    a second optical receiver comprising one or more optical detectors to detect a presence of the retrieval device based on the light transmitted by the first optical transmitter of the retrieval device, and sense a relative angle of the first optical transmitter of the retrieval device;

    one or more controllers to adjust, responsive to identification of an underwater environmental condition, a transmission parameter used by a second optical transmitter to transmit the seismic data, and control the second optical transmitter to direct light to the first optical receiver of the retrieval device based on the relative angle of the first optical transmitter of the retrieval device sensed by the one or more optical detectors; and

    the second optical transmitter to enter a power up state responsive to detection, by the second optical receiver, of the presence of the retrieval device, and transmit the seismic data through the aqueous medium using light based on the transmission parameter adjusted by the controller, the light directed towards the first optical receiver;

    the first optical receiver of the retrieval device to receive the light corresponding to the seismic data transmitted through the aqueous medium by the second optical transmitter of the OBS node;

    a photodiode of the first optical receiver that generates electrical output based on the light received by the first optical receiver from the second optical transmitter; and

    an automatic gain control amplifier of the retrieval device that receives the electrical output from the first optical receiver and adjusts a level of the electrical output.

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