MEASUREMENT OF POLARIZATION MODE DISPERSION OR DIFFERENTIAL GROUP DELAY OF AN OPTICAL PATH
First Claim
1. A system comprising:
- a receiver to receive a first optical signal from a first channel associated with a first wavelength and a second optical signal from a second channel associated with a second wavelength,wherein the first optical signal and the second optical signal traveled along a same optical path, wherein the first optical signal and the second optical signal are synchronized, and wherein the second optical signal includes varying polarization;
a detector to determine a plurality of differential travel delays between the first optical signal and the second optical signal over a period of varying polarizations of the second optical signal, wherein the plurality of differential travel delays include a maximum differential travel delay and a minimum differential travel delay; and
a processor to determine a differential group delay based on the maximum differential travel delay and the minimum differential travel delay.
1 Assignment
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Accused Products
Abstract
A method may include generating first and second optical signals and modulating the first and second optical signals simultaneously to synchronize the signals. The method may include varying the polarization of the second optical signal and transmitting the first and second optical signals. The method may include receiving the first and second optical signals, wherein the signals traveled along a same optical path. The method may include determining a plurality of differential travel delays between the first and second optical signals over a period of varying polarizations and determining a differential group delay based on the maximum and the minimum differential travel delays.
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Citations
22 Claims
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1. A system comprising:
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a receiver to receive a first optical signal from a first channel associated with a first wavelength and a second optical signal from a second channel associated with a second wavelength, wherein the first optical signal and the second optical signal traveled along a same optical path, wherein the first optical signal and the second optical signal are synchronized, and wherein the second optical signal includes varying polarization; a detector to determine a plurality of differential travel delays between the first optical signal and the second optical signal over a period of varying polarizations of the second optical signal, wherein the plurality of differential travel delays include a maximum differential travel delay and a minimum differential travel delay; and a processor to determine a differential group delay based on the maximum differential travel delay and the minimum differential travel delay. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method comprising:
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receiving a first optical signal from a first channel associated with a first wavelength; receiving a second optical signal from a second channel associated with a second wavelength, wherein the first optical signal and the second optical signal traveled along a same optical path, wherein the first optical signal and the second optical signal are synchronized, and wherein the second optical signal includes varying polarization; detecting a plurality of differential travel delays between the first optical signal and the second optical signal over a period of varying polarizations of the second optical signal, wherein the plurality of differential travel delays includes a maximum differential travel delay and a minimum differential travel delay; and determining a differential group delay based on the maximum differential travel delay and the minimum differential travel delay. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A system comprising:
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a first light source to generate a first optical signal at a first wavelength; a second light source to generate a second optical signal at a second wavelength different than the first wavelength; a modulator to modulate the first optical signal and the second optical signal simultaneously to synchronize the first optical signal and the second optical signal; a polarization scrambler to vary the polarization of the second optical signal; and a transmitter to transmit the first optical signal and the second optical signal. - View Dependent Claims (16, 17, 18)
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19. A method comprising:
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generating a first optical signal at a first wavelength; generating a second optical signal at a second wavelength different than the first wavelength; modulating the first optical signal and the second optical signal simultaneously to synchronize the first optical signal and the second optical signal; varying the polarization of the second optical signal; and transmitting the first optical signal and the second optical signal. - View Dependent Claims (20, 21, 22)
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Specification