Fiber-optic input and output for superconducting circuits
- Hypres Inc., Elmsford, NY (United States)
- Lawrence Livermore National Lab., CA (United States)
Superconducting devices operate at speeds where coaxial copper cables can be a limiting factor. Coaxial cables can limit frequency response and impose significant thermal loading on a cryogenic system. The high bandwidth of optical fibers and their low thermal conductivity make them good candidates for providing data into and out of superconducting circuits. In this paper, the authors present the results of their experience in operating photodetectors and laser diodes together with superconducting circuits in the same low temperature (4.2 K) environment. Using these photodetectors, they demonstrate the input of optical signals to an analog superconducting circuit at 6 GHz. Output from a superconducting circuit operating at 500 MHz is fed into a laser diode, and optically coupled to room temperature electronics. By combining these two techniques, they demonstrate a fully operational superconducting shift register with both input and output signals supplied by optical fiber.
- DOE Contract Number:
- FG02-91ER81262
- OSTI ID:
- 64699
- Report Number(s):
- CONF-940142-; ISBN 0-8194-1455-7; TRN: IM9528%%359
- Resource Relation:
- Conference: OE/LASE `94: conference on optics, electro-optics, and laser applications in science and engineering, Los Angeles, CA (United States), 22-29 Jan 1994; Other Information: PBD: 1994; Related Information: Is Part Of Superconductive devices and circuits. Proceedings SPIE Volume 2160; Buhrman, R.A.; Clarke, J.; Daly, K.; Koch, R.H.; Luine, J.A.; Simon, R.W. [eds.]; PB: 272 p.
- Country of Publication:
- United States
- Language:
- English
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