Magnetic field response of erbium-doped magneto-optic fiber Bragg grating

Abstract

The spectrum shift of erbium-doped magneto-optic fiber Bragg grating (Er-MFBG) induced by external magnetic fields is, for the first time, directly measured by the method of the "direct edge detection," and then the effective Verdet constant of −12.42 rad∕ðT · mÞ is determined. The theoretical results are in agreement with the experimental data. Our analysis shows the transfer characteristics of the spectrum shift to the transmission power are dependent on the state of polarization and wavelength position of probe light for a given Er-MFBG.

Nonreciprocal directional dichroism at telecom wavelengths

“…The Cband (1530 -1565 nm) is perhaps most familiar and employs drawn Er-glass fibers. While the optical properties of Er-glass fibers have been studied separately under electric and magnetic fields, [56][57][58][59][60] we are unaware of any attempt to explore rectification effects. Moreover, nonreciprocal directional dichroism has been revealed in a number of different energy regimes, it is rarely encountered in the near infrared.…”

Magnetic field sensor based on the Ampere’s force using dual-polarization DBR fiber laser

“…For example, those configurations based on the optical fibers with the interferometric detection method [10,11] and the fiber Bragg gratings using the wavelength interrogation [12][13][14][15]. Particularly, the orthogonal dual-polarization fiber grating lasers by measuring the beat frequency signal have been attracting great attention [16][17][18].…”