Optical control microwave switches
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Summary
A CW-mode optically
controlled microwave switch (CW-mode OMS) on a coplanar waveguide (CPW)
for both a standard and a new design with carrier-confinement structure
is investigated. We experimentally show that it may not be possible to
obtain less than 7 dB of insertion loss with the standard OMS, and the
carrier diffusion limits the improvement of insertion loss in CW-mode
operation. We present a new design with a carrier-confinement structure
with silicon (Si) substrate etching to confine the optically generated
free-carriers. Less than 2 dB of insertion loss is obtained with the
new carrier-confined OMS.
A new design for a
carrier-confined OMS (a) a schematic diagram (b) a picture of the
fabricated sample with a new carrier-confinement structure.
Related publications
- S. I. Lee, Y. Kuga, and R. A.
Mullen, "Experimental
results for a CW-mode optically controlled microwave switch with a
carrier-confinement structure," Microwave and Optical
Technology Letters, vol. 36, no. 4, pp. 257-262, February 2003.
- S. I. Lee, Y. Kuga, and R. A.
Mullen, "Optically
tunable MMW attenuator based on layered structures," Microwave and Optical Technology Letters, vol. 27, no. 1, pp.
9-13, October 2000.
- S. I. Lee and Y. Kuga, "Analysis
of the CW-mode optically controlled microwave switch," SPIE:
Remote Senging and Space Technology, Seattle, WA, August 7-11,
2002.
- S. I. Lee and Y. Kuga,
"Experimental results for a CW-mode optically controlled microwave
switch with a carrier-confinement structure," National Radio
Science Meeting, Boulder, CO, January 9-12, 2002.
2nd place for the URSI Student Prize Paper
Competition
- S. I. Lee, S. W. Lee, U.
Ketprom, and Y. Kuga, "Optically
CW-mode controlled microwave switches with carrier-confinement on a
coplanar waveguide," URSI APS, Boston, MA, July 8-13, 2001.
Sponsored by ??
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