| 摘要 |
An electromechanical sensor (12) produces an electrical signal in response t o a change in a physical parameter being monitored. An optical phase modulator (16) is arranged such that electrical signals from the electromechanical sensor (12) causes a phase change in optical signals propagating in the two legs (46, 48) of the interferometer (44). Applying the electrical signal to the phase modulator (16) changes the optical path length difference between the interferometer legs (46, 48) and produces an optical signal that can be transmitted to a remote location. The optical signal into an electrical sign al that can be processed to measure changes in the parameter.
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