Laser applications and other topics in quantum electronics

Compensation of the velocity mismatch in traveling-wave modulators utilizing a cumulative interaction

A. S. Semenov, A. A. Chirakadze


Abstract: An analysis is made of the main characteristics (bandwidth, electrical drive power, frequency response) of traveling-wave electrooptic modulators using waveguide Mach–Zehnder interferometers. A bandwidth of tens of gigahertz and a drive power of the order of hundreds of milliwatts are attainable only in a system with an intermittent cumulative interaction between a modulating microwave and an optical wave. Such a system can be constructed in various ways utilizing a periodic array of "reversing" electrodes, periodic removal of an optical waveguide from the region of interaction of light in a modulating wave, and structures with an aperiodic variation of the electric field polarity, including "toothed" structures.

UDC: 535.241.13

PACS: 42.79.Hp, 07.60.Ly, 42.79.Sz

Received: 11.02.1991

 English version: Soviet Journal of Quantum Electronics, 1992, 22:1, 73–78

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