Rapid acquisition, pointing and tracking optical system for free space optical communications
First Claim
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1. An optical communication apparatus, comprising:
- (a) an optical fiber comprising a first and second end;
(b) at least one of an optical signal receiver and an optical signal transmitter in communication with said first end of said optical fiber;
(c) a mirror lying in a focal plane of the apparatus, wherein said mirror comprises an opening to receive said second end of said optical fiber; and
(d) a translation device in communication with said optical fiber and said mirror, wherein said translation device is operable to move said mirror and said second end of said optical fiber within the focal plane of the apparatus.
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Abstract
An acquisition, pointing and tracking system for free space optical communications systems performs the pointing and tracking function internally by way of translating an internal optical fiber in the focal plane of the transceiver telescope with a reflecting mirror in the telescope focal plane of each linked transceiver. The beam reflected from the mirror records the exact direction of the reflected beam at the transmitting beam'"'"'s transceiver terminal, providing the transmitting source to lock on to the receiving telescope, allowing for the link to be acquired.
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Citations
12 Claims
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1. An optical communication apparatus, comprising:
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(a) an optical fiber comprising a first and second end; (b) at least one of an optical signal receiver and an optical signal transmitter in communication with said first end of said optical fiber; (c) a mirror lying in a focal plane of the apparatus, wherein said mirror comprises an opening to receive said second end of said optical fiber; and (d) a translation device in communication with said optical fiber and said mirror, wherein said translation device is operable to move said mirror and said second end of said optical fiber within the focal plane of the apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of communicating with optical signals transmitted between first and second optical devices, wherein the second optical device comprises an optical fiber comprising a first and second end with an optical signal receiver and an optical receiver transmitter in communication with said first end of said optical fiber, and a mirror within a focal plane of the second optical device, wherein said mirror comprises an opening to receive said second end of said optical fiber, said method comprising the steps of:
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(a) sending a first optical signal from the first optical device to the second optical device; (b) receiving the first optical signal on the mirror of the second optical device; (c) reflecting the first optical signal from the mirror of the second optical device back to the first optical device; and (d) deflecting an end of the optical fiber of the second optical device to lie at a maximum intensity point of the first optical signal received on the mirror at the focal plane of the second optical device by means of a translation device operable to move said mirror and said second end of said optical fiber within the focal plane of the second optical device. - View Dependent Claims (10, 11, 12)
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Specification