Optical Network Testing
First Claim
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1. A method, comprising:
- generating a test signal;
modulating the test signal;
transmitting the test signal on an optical path, the optical path including a plurality of add-drop multiplexer devices and a plurality of amplifiers;
receiving the test signal at a destination device;
converting the received test signal into an electrical signal; and
identifying the alternating current (AC) portion of the electrical signal.
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Abstract
A method includes generating a test signal and modulating the test signal. The method may also include transmitting the test signal on an optical path, where the optical path may include a number of add-drop multiplexer devices and amplifiers. The method may also include receiving the test signal at a destination device and converting the received test signal into an electrical signal. The method may further include identifying a portion of the electrical signal that is associated with the modulated test signal.
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Citations
22 Claims
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1. A method, comprising:
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generating a test signal; modulating the test signal; transmitting the test signal on an optical path, the optical path including a plurality of add-drop multiplexer devices and a plurality of amplifiers; receiving the test signal at a destination device; converting the received test signal into an electrical signal; and identifying the alternating current (AC) portion of the electrical signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A device, comprising:
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a signal source configured to emit a test signal on an optical fiber; a filter coupled to the signal source, the filter configured to filter the signal from the signal source based on a frequency associated with a channel of the optical fiber on which an optical path test is to be performed; and a modulator coupled to the signal source, the modulator configured to modulate output of the signal source and forward the modulated signal onto the optical fiber. - View Dependent Claims (12, 13, 14)
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15. A device, comprising:
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a receiver coupled to a last node in an optical path being tested, the receiver being configured to receive electromagnetic radiation transmitted through the optical path, wherein the optical path includes a first node configured to receive a modulated test signal, and a plurality of other nodes, wherein at least some of the nodes in the optical path include optical add-drop multiplexers; a filter coupled to the receiver, the filter configured to filter the received electromagnetic radiation; circuitry configured to convert the filtered electromagnetic radiation into electrical signals; and logic configured to measure a portion of the electrical signals corresponding to electromagnetic radiation associated with the modulated test signal. - View Dependent Claims (16, 17)
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18. A system, comprising:
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a first test device configured to be coupled to a first node in an optical path, the first test device comprising; a signal source configured to generate test data, and a modulator coupled to the signal source, the modulator configured to modulate output of the signal source and forward modulated test data onto the optical path; and a second test device configured to be coupled to a last node in the optical path, the second test device comprising; a filter configured to filter electromagnetic radiation received at the second test device, circuitry configured to convert the filtered electromagnetic radiation into electrical signals, and logic configured to measure a portion of the electrical signals corresponding to electromagnetic radiation associated with the modulated test data. - View Dependent Claims (19, 20, 21, 22)
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Specification