Method for producing reflective taps in optical fibers and applications thereof
First Claim
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1. A reflectively tapped delay line signal processing device with fixed tap weights where the taps are formed by:
- preparing one end of a first optical fiber by cleaving or polishing;
placing said first fiber in a vacuum system;
coating the prepared end of the first fiber with a material having dissimilar refractive properties than said fiber;
fusing the coating, prepared end of the first fiber with the end of a second fiber until the reflectivity of the fused region reaches a desired value.
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Abstract
A method for producing reflectors in a continuous length of optical fiber is disclosed. The present process includes the steps of preparing the ends of two or more optical fibers, placing one or more of these fibers in a vacuum system and applying a metallic or dielectric coating to the fiber ends, and then fusing the prepared, coated ends of the fibers together until the reflectivity of the region reaches a desired value.
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Citations
13 Claims
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1. A reflectively tapped delay line signal processing device with fixed tap weights where the taps are formed by:
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preparing one end of a first optical fiber by cleaving or polishing; placing said first fiber in a vacuum system; coating the prepared end of the first fiber with a material having dissimilar refractive properties than said fiber; fusing the coating, prepared end of the first fiber with the end of a second fiber until the reflectivity of the fused region reaches a desired value. - View Dependent Claims (2, 3, 4)
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5. A reflectivity tapped delay line signal processing device with variable tap weights, where the taps are formed by
forming two optical mirrors along a continuous length of optical fiber such that the mirrors are separated by a length of optical fiber, the combination forming a Fabry-Perot cavity; depositing an electrically resistive medium on the fiber between the two mirrors, such that the reflectivity of the cavity will vary upon the passage of electrical current through said medium. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12)
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13. A reflectivity tapped delay line signal processing device with variable tap weights, where the taps are formed by
forming two optical mirrors along a continuous length of optical fiber such that the mirrors are separated by a length of optical fiber, the combination forming a Fabry-Perot cavity. depositing conductive electrodes on opposite sides of the fiber such that the reflectivity of the cavity will vary upon the application of a voltage between the electrodes.
Specification