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True-time-delay element in lossy environment using EO waveguides

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2 Author(s)
Byoung-Joon Seo ; Dept. of Electr. Eng., Univ. of California, Los Angeles, CA, USA ; Fetterman, H.

We investigate a photonic true time delay element in a lossy environment using electrooptic waveguides. Its principle is based on the ring resonator and the all-pass filter. In the lossy environment, it is known that the insertion loss depends on the delay time when using the conventional ring resonator. We add a by-pass waveguide to the ring resonator in order to compensate the resonant-dependent loss. As a result, we have a voltage-controlled photonic true time delay element with its insertion loss independent of the delay time.

Published in:

Photonics Technology Letters, IEEE  (Volume:18 ,  Issue: 1 )