Magnetic field rotating type Faraday polarization controller

A polarization amplifier and stabilizer based on Fabri–Perot resonator filled with chiral photonic crystal

“…And in wavelength-division-multiplexing systems, the polarization-mode dispersion, polarizationdependent loss and unpredicted state of polarization drift (due to thermal, mechanical or pressure perturbations) can be accumulated, which considerably prevent the long-haul telecommunications [17][18][19][20]. To control the state of light polarization, a number of useful polarization controllers, such as the squeezed fiber [21], rotating wave plates [22], electro-optic wave plates [23], Faraday rotators [24][25][26][27] and rotating magnetic field type ones [28] have been reported. Therefore, another important problem of ellipsometrics (as well as polarimetrics and optoelectronics) is as follows.…”