An electrooptic intensity modulator with improved linearity
- 1 September 1991
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 3 (9), 792-795
- https://doi.org/10.1109/68.84495
Abstract
A highly linear electrooptic modulator has been designed, fabricated, and evaluated. The design of this modulator consists of only a simple modification to the directional coupler. Two-tone testing has demonstrated that, for an optical modulation depth of 30% per channel, the third-order intermodulation distortion is more than 30 dB lower than that of the conventional directional coupler or Mach-Zehnder modulators. This improvement was not observed to be accompanied by any increase in second harmonic distortion. Also included are results of two-tone computer simulations which predict the improvement in linearity of this device for a range of modulation depths.Keywords
This publication has 4 references indexed in Scilit:
- In search of a linear electrooptic amplitude modulatorIEEE Photonics Technology Letters, 1991
- New integrated-optic modulator design for AM video transmissionPublished by Optica Publishing Group ,1991
- Waveguide modulators with extended linear dynamic range-a theoretical predictionIEEE Photonics Technology Letters, 1990
- Distortion characteristics of optical directional coupler modulatorsIEEE Transactions on Microwave Theory and Techniques, 1990