Fiber and integrated optics

Linear waveguide modulator capable of optical power modulation by more than 50%

N. M. Lyndin, V. A. Sychugov, B. A. Usievich

General Physics Institute, Russian Academy of Sciences, Moscow

Abstract: A theoretical investigation is reported of different variants of a modulator based on coupled waveguides with a Y coupler at the entry. A calculation is made of the parameters of three-section modulators (two rows of electrodes of identical length separated by an electrode-free region) ensuring that the third-order intermodulation noise does not exceed –100 and – 60 dB in the range of the modulation depths of the output optical signal of at least up to 50 and 80%, respectively. A method is proposed for the compensation of technological errors contributing to the coupling constant of the waveguides. This method should make it easier to construct the investigated modulator structures.

PACS: 42.79.Hp, 42.79.Gn

Received: 26.06.1994

 English version: Quantum Electronics, 1995, 25:5, 478–483

Bibliographic databases:

•