Abstract:
High-speed phase modulation (in the frequency bandwidth of 20 GHz, the highest yet reported for multiple quantum well (MQW) phase modulators) for waveguided InGaAlAs/InAl...Show MoreMetadata
Abstract:
High-speed phase modulation (in the frequency bandwidth of 20 GHz, the highest yet reported for multiple quantum well (MQW) phase modulators) for waveguided InGaAlAs/InAlAs MQW optical modulators is reported. The modulator successfully operates at a long wavelength of 1-55 mu m with a low required voltage for phase shift (V pi =3.8 V), small intensity modulation depth below 1.5 dB, and without any modulation bandwidth degradation up to 20 GHz under high input optical power of 0 dBm in single-mode fiber.<>
Published in: IEEE Photonics Technology Letters ( Volume: 4, Issue: 1, January 1992)
DOI: 10.1109/68.124865
Citations are not available for this document.
Cites in Patents (1)Patent Links Provided by 1790 Analytics
1.
Yi, Fei; Ho, Seng-Tiong, "Ultra-sensitive electric field detection device"
Inventors:
Yi, Fei; Ho, Seng-Tiong
Abstract:
An electric field detection device. In one embodiment, the electric field detection device includes an interferometer having a reference arm and an active arm. The reference arm comprises a first electro-optic waveguide. The active arm comprises a first electrically conductive plate, a second electrically conductive plate spaced apart from the first electrically conductive plate defining a first gap therebetween, a third electrically conductive plate disposed in the first gap and vertically extending from the first electrically conductive plate to define a T-shape structure and a second gap between the third electrically conductive plate and the second electrically conductive plate, where the second gap is substantially smaller than the first gap; and a second electro-optic waveguide disposed in the second gap and being in electrical communication with the second and third electrically conductive plates.
Assignee:
NORTHWESTERN UNIVERSITY
Filing Date:
17 October 2011
Grant Date:
12 November 2013
Patent Classes:
Current U.S. Class:
385010000, 385008000, 385015000, 385040000
Current International Class:
G02F0012950000
