Michelson interferometer based delay line interferometers
First Claim
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1. An interferometer, comprising:
- means for splitting, at a splitting location, an input light beam into a first beam and a second beam;
means for recombining, at a recombination location, said first beam and said second beam to produce at least one output beam, wherein said first beam will travel a first optical path length (OPL) from said splitting location to said recombination location, wherein said second beam will travel a second OPL from said splitting location to said recombination location, wherein when said input light beam carries phase modulated data with a fixed time interval between two adjacent data symbols, then the difference in optical path lengths between said first OPL and said second OPL is about equal to said time interval multiplied by the speed of light; and
means for detecting each said output beam.
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Abstract
An interferometer includes a means for splitting, at a splitting location, an input light beam into a first beam and a second beam; and means for recombining, at a recombination location, the first beam and the second beam. The interferometer is designed such that the first beam will travel a first optical path length (OPL) from the splitting location to the recombination location, and the second beam will travel a second OPL from the splitting location to the recombination location and such that when the input light beam has been modulated at a data rate comprising a time interval, then the difference in optical path lengths between the first OPL and the second OPL is about equal to the time interval multiplied by the speed of light.
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Citations
20 Claims
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1. An interferometer, comprising:
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means for splitting, at a splitting location, an input light beam into a first beam and a second beam;
means for recombining, at a recombination location, said first beam and said second beam to produce at least one output beam, wherein said first beam will travel a first optical path length (OPL) from said splitting location to said recombination location, wherein said second beam will travel a second OPL from said splitting location to said recombination location, wherein when said input light beam carries phase modulated data with a fixed time interval between two adjacent data symbols, then the difference in optical path lengths between said first OPL and said second OPL is about equal to said time interval multiplied by the speed of light; and
means for detecting each said output beam. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method, comprising:
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providing an input light beam modulated at a data rate comprising a time interval;
splitting, at a splitting location, said input light beam into a first beam and a second beam;
recombining, at a recombination location, said first beam and said second beam to produce at least one output beam, wherein said first beam will travel a first optical path length (OPL) from said splitting location to said recombination location, wherein said second beam will travel a second OPL from said splitting location to said recombination location, wherein when said input light beam carries phase modulated data with a fixed time interval between two adjacent data symbols, then the difference in optical path lengths between said first OPL and said second OPL is about equal to said time interval multiplied by the speed of light; and
detecting each said output beam with a photodetector. - View Dependent Claims (17, 18, 19, 20)
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Specification
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Current AssigneeOptoplex
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Original AssigneeOptoplex
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InventorsHsieh, Yung-Chieh
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Granted Patent
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Time in Patent OfficeDays
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Field of Search
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US Class Current359/578
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CPC Class CodesH04B 10/677 for differentially modulate...
