Systems and methods for establishing an underwater optical communication network
First Claim
1. A method for establishing an underwater optical communication link between a first cabled observatory and a second cabled observatory, the method comprising:
- disposing a first optical modem within an optical range of the first cabled observatory, wherein the first optical modem is mechanically coupled to a second optical modem by a tether;
disposing the second optical modem within an optical range of the second cabled observatory, wherein the second cabled observatory has a location different from that of the first cabled observatory;
establishing an optical connection between the first cabled observatory and the second cabled observatory, through the first optical modem, the tether and the second optical modem, wherein the first optical modem and second optical modem communicate by diffusing electromagnetic radiation of wavelength in the optical spectrum between 300 nm to 800 nm;
disposing a third optical modem within an optical range of the second cabled observatory;
disposing a fourth optical modem within an optical range of a third cabled observatory, wherein the third cabled observatory has a location different from the first and second cabled observatories.
1 Assignment
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Accused Products
Abstract
The systems and methods described herein provide a reconfigurable, long-range, optical modem-based underwater communication network. In particular, the network provides a low power, low cost, and easy to deploy underwater optical communication system capable of being operated at long distances. Optical modem-based communication offer high data rate, omni-directional spatial communication in the visual spectrum. The omni-directional aspect of communication is advantageous because precise alignment of communication units may not be required. The optical modems may be deployed via unmanned underwater vehicles (UUVs) and physically connected by tethers.
25 Citations
13 Claims
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1. A method for establishing an underwater optical communication link between a first cabled observatory and a second cabled observatory, the method comprising:
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disposing a first optical modem within an optical range of the first cabled observatory, wherein the first optical modem is mechanically coupled to a second optical modem by a tether; disposing the second optical modem within an optical range of the second cabled observatory, wherein the second cabled observatory has a location different from that of the first cabled observatory; establishing an optical connection between the first cabled observatory and the second cabled observatory, through the first optical modem, the tether and the second optical modem, wherein the first optical modem and second optical modem communicate by diffusing electromagnetic radiation of wavelength in the optical spectrum between 300 nm to 800 nm; disposing a third optical modem within an optical range of the second cabled observatory; disposing a fourth optical modem within an optical range of a third cabled observatory, wherein the third cabled observatory has a location different from the first and second cabled observatories. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for establishing an underwater optical communication link between a first cabled observatory and a second cabled observatory, the system comprising:
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a first underwater vehicle including an integrated first optical modem; a second underwater vehicle including an integrated second optical modem; a tether mechanically coupled to the first optical modem and the second optical modem; wherein each of the first optical modem and second optical modem comprises; a transmitter having at least one optical source capable of emitting electromagnetic radiation of wavelength in the optical spectrum between 300 nm to 800 nm; a diffuser capable of diffusing the electromagnetic radiation and disposed in a position surrounding a portion of the at least one source for diffusing the electromagnetic radiation in a plurality of directions; wherein the first underwater vehicle is configured to; dispose a third optical modem from an underside portion of the first underwater vehicle, wherein the third optical modem is mechanically coupled to the first optical modem by a second tether; and retrieve the disposed third optical modem into the underside portion of the first underwater vehicle. - View Dependent Claims (11, 12)
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13. A method for establishing an underwater optical communication link between a first cabled observatory and a second cabled observatory, the method comprising:
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disposing a first optical modem within an optical range of the first cabled observatory, wherein the first optical modem is mechanically coupled to a second optical modem by a tether; disposing the second optical modem within an optical range of the second cabled observatory, wherein the second cabled observatory has a location different from that of the first cabled observatory; establishing an optical connection between the first cabled observatory and the second cabled observatory, through the first optical modem, the tether and the second optical modem, wherein the first optical modem and second optical modem communicate by diffusing electromagnetic radiation of wavelength in the optical spectrum between 300 nm to 800 nm; detecting a fault in the underwater optical communication link; determining if the fault occurs at the first optical modem, the second optical modem, or the tether; disposing a third optical modem within an optical range of the first optical modem; and disposing a fourth optical modem within an optical range of the second optical modem, wherein the third optical modem and fourth optical modem are mechanically coupled by a second tether.
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Specification