Interrogation of a fiber Fabry-Perot sensor by current modulation of a diode laser

Details Interrogation of a fiber Fabry-Perot sensor by current modulation of a diode laser Interrogation of a fiber Fabry-Perot sensor by current modulation of a diode laser

2004-11-09

arxiv.org/abs/physics/0411100v1

Physics

Optics

Submitted to IEEE Photonics Technology Letters

Scientific paper

We present a method for remote interrogation of passive fiber Bragg grating Fabry-Perot resonators, employing current modulation of the diode laser source. With the presence of both RF amplitude and frequency modulation, it is a variant of the ultra-sensitive Pound-Drever-Hall laser frequency locking technique. We demonstrate that current modulation and interferometric demodulation removes the need for a phase modulator in the sensing architecture.

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