Noise management for optical time delay interferometry
AssigneeAdelos, Inc.
InventorsDan Alan Preston, Stephen Timothy Doll, James Alexander Philp
Life of this patent
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Abstract
An integrated fiber interferometry interrogator for generating superimposed waves is disclosed. The system is optimized for efficiency and vibration attenuation. The system comprises an optical light source for generating a first signal, a first signal splitter which splits the first signal into a reference signal and an interrogation signal, optical modulators for modulating the signals, a fiber coupler connected to a fiber under test, an isolator, a circulator with a plurality of connections for directing the signals, a signal mixer for mixing the signals into superimposed waves, and photo diodes for receiving the superimposed waves.
Claims29
A system, comprising:
- a splitter configured to generate, in response to a coherent source optical signal, a reference optical signal and an interrogation optical signal;
- a first modulator configured to modulate the reference optical signal;
- a second modulator configured
- to modulate the interrogation optical signal to generate a continuous-wave modulated interrogation optical signal, and
- to couple the continuous-wave modulated interrogation optical signal to an optical fiber;
- and
- a converter configured to generate at least one electrical signal in response to a combination of the modulated reference optical signal and a redirected modulated interrogation optical signal from the optical fiber.
A system, comprising:
- an optical fiber;
- a splitter configured to generate, in response to a coherent source optical signal, a reference optical signal and an interrogation optical signal;
- a first modulator configured to modulate the reference optical signal;
- a second modulator configured
- to modulate the interrogation optical signal to generate a continuous-wave modulated interrogation optical signal, and
- to couple the continuous-wave modulated interrogation optical signal to the optical fiber;
- and
- a converter configured to generate at least one electrical signal in response to a combination of the modulated reference optical signal and a redirected modulated interrogation optical signal from the optical fiber.
A method, comprising:
- generating, in response to a coherent source optical signal, a reference optical signal and an interrogation optical signal;
- modulating the reference optical signal;
- modulating the interrogation optical signal to generate a continuous-wave modulated interrogation optical signal;
- coupling the continuous-wave modulated interrogation optical signal to an optical fiber;
- and
- generating at least one electrical signal in response to a combination of the modulated reference optical signal and a redirected modulated interrogation optical signal from the optical fiber.
A tangible, non-transitory computer-readable medium storing data that, while executed by, or instantiating, a computer circuit, cause the computer circuit or another circuit:
- to generate, in response to a coherent source optical signal, a reference optical signal and an interrogation optical signal;
- to modulate the reference optical signal;
- to modulate the interrogation optical signal to generate a continuous-wave modulated interrogation optical signal that is coupled to an optical fiber;
- and
- to generate at least one electrical signal in response to a combination of the modulated reference optical signal and a redirected modulated interrogation optical signal from the optical fiber.
Dependencies are inferred from the claim text.