Paper
12 November 1999 Ultrashort single-mode pulse propagation on CPW with air-bridges observed by photoconductive pump-probe measurement
Jongjoo Lee, Joungho Kim
Author Affiliations +
Abstract
We firstly demonstrate the effects of the air-bridges on the coplanar waveguide (CPW) for the single-mode pulse propagation using a picosecond time-domain pump-probe measurement. The picosecond photoconductive sampling technique is able to measure the transmitted and reflected pulses with a picosecond temporal resolution corresponding to a 300-GHz frequency bandwidth. It is found that more than two of the crossing air-bridges over the CPW are needed to support the single-mode propagation. The crossing air-bridge is found to behave as a bypass capacitor to an incoming pulse. For the air-bridges used for connecting the ground planes along the CPW, the length of the air-bridge is founded more critical. The air-bridges have exhibited more than 30-dB return loss up to 300-GHz. Finally, the s- parameters of open and short terminations were measured using the embedded CPW with the proposed air-bridge structures.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jongjoo Lee and Joungho Kim "Ultrashort single-mode pulse propagation on CPW with air-bridges observed by photoconductive pump-probe measurement", Proc. SPIE 3795, Terahertz and Gigahertz Photonics, (12 November 1999); https://doi.org/10.1117/12.370174
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CITATIONS
Cited by 2 scholarly publications.
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KEYWORDS
Picosecond phenomena

Wave propagation

Silicon

Signal attenuation

Waveguides

Pulsed laser operation

Distortion

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