A Novel Bias Angle Control System for ${\rm LiNbO}_{3}$ Photonic Sensor Using Wavelength Tuning

A novel bias angle control technique to improve the performances of lithium niobate photonic E-field sensor while not disturbing the measured electric field has been demonstrated. Using this technique, bias locking at linear position along the transfer function is achieved with better than 2.2° accuracy. In addition, this bias control technique has been proven to be robust and simple to implement in field applications.