Integrated optical sensors in lithium niobate
Catherine H. Bulmer
Optical guided-wave devices are of interest as sensors because the active device can be small and nonperturbing. An integrated optical modulator can form a compact electric field detector and has no long, electrically-conductive leads that can be perturbing. A channel waveguide device, with small dimensions and closely spaced electrodes, is much more sensitive than a bulk device and is therefore more useful where small physical parameters are to be detected. Lithium niobate (LiNbO3) is a suitable material in which to form a sensor; it has large electro-optic coefficients, which make it responsive to small fields, and low optical loss.
Access to the full text of this article is restricted. In order to view this article please log in.