Polarization- and frequency-stable fiber laser for magnetic-field sensing.
نویسندگان
چکیده
We report a novel polarimetric fiber laser sensor for magnetic-field-current measurement that is stable to variation of temperature and strain because it employs a Faraday rotating mirror. We obtained a sensitivity of 10.24 kHzyA with good linearity and greatly improved the signal-to-noise ratio by reducing the number of laser cavity modes with the help of a saturable absorber.
منابع مشابه
Response of fiber lasers to an axial magnetic field.
An axial magnetic field induces circular birefringence in optical fibers, resulting in the rotation of the polarization angle for a linearly polarized input (Faraday effect). The rotation angle is linearly proportional to the magnitude of the applied field. Accurate measurements of the polarization angle variation provide a means for monitoring the magnetic field. The Faraday effect in optical ...
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عنوان ژورنال:
- Optics letters
دوره 21 14 شماره
صفحات -
تاریخ انتشار 1996