High-speed operation of LiNbO3 electro-optic interferometric waveguide modulators.
High-speed optical intensity modulation is reported for the first time using single-mode electro-optic interferometric waveguide modulators formed from Ti-diffused waveguides in LiNbO3. For cw 0.633-microm optical inputs, modulation at rates up to 1.4 GHz has been achieved by driving the interferometer through multiple-7r phase shifts. Envelope modulation of a 275-MHz optical pulse train from a cw mode-locked frequency-doubled Nd:YAG laser with a 68.9-MHz drive signal has also been demonstrated.
Leonberger
F J
FJ
Lincoln Laboratory, Massachusetts Institute of Technology, Lexington, Massachusetts 02173, USA.