We describe the design, fabrication, and characteristics of a Ti:LiNbO3 optical modulator with a ridge structure. The structure keeps microwave propagation loss low and enables a large interaction between microwaves and optical waves under the conditions of velocity-matching and impedance matching, resulting in a large modulation bandwidth and low driving voltage. Using this structure, we have developed an optical intensity modulator with an optical 3-dB bandwidth of 75 GHz and a driving voltage of 5.0 V at a wavelength of 1.5 μm
Published in:
Lightwave Technology, Journal of
(Volume:13
,
Issue:
6
)
Date of Publication: Jun 1995