Relative Performance of Impedance-Matched Lumped-Element and Traveling-Wave Integrated-Optical Phase Modulators.

摘要

The performance of impedance-matched lumped-element and traveling-wave integrated-optical phase modulators is compared. This analysis shows that the performance of lumped-element modulators in LiNbO3 exceeds that of traveling-wave devices when the product of the modulation frequency and electrode length is less approximately 20 GHz-mm. Impedance-matched lumped-element modulators are particularly applicable to narrow-band systems operating up to several gigahertz. Reprints. (rh)