Liang, Jia Yi; (1992) An high speed integrated optical Fabry-Perot modulator. Doctoral thesis (Ph.D), UCL (University College London).

Text out.pdf Download (4MB)

Abstract

This thesis describes a novel approach to high speed optical modulation in lithium niobate using an optically resonant Fabry-Perot cavity. In this work, single mode, low optical loss, out-diffusion-free waveguides were realised by a modified titanium indiffusion into a lithium niobate substrate. The coplanar asymmetric travelling-wave electrodes were investigated and fabricated by a new technique called the "etched-lift-off" method. Multi-layer highly reflective dielectric coatings were deposited onto the waveguide ends to form an optical cavity. The behavior of the optical waveguide Fabry-Perot cavity was analysed. The sensitivity to temperature variation of the modulator was investigated as well, and this indicated the possibility of using the cavity as a temperature sensor. The theoretical simulation of the Fabry- Perot modulation at high frequency was also calculated. Finally, the integrated optical Fabry-Perot modulator was fabricated and a modulation bandwidth of at least one GHz was achieved.

Download activity - last month

Export as JSONCSVXML

Download activity - last 12 months

Export as JSONCSVXML

Downloads by country - last 12 months

Export as XMLCSVJSON

Archive Staff Only

View Item