BROWSE
Detail
Registered METHOD AND APPARATUS FOR CANCELLATION OF TRANSIENT VOLTAGE SPIKE
- Inventors
- Kang Sae-Kyoung, Cho Jeong-Sik, Kim Kwangjoon, Noh Tae-Gon
- Application No.
- 12908498 (2010.10.20)
- Publication No.
- 20110133058 (2011.06.09)
- Registration No.
- 8598505 (2013.12.03)
- Country
- UNITED STATES
- Project Code
- 09MB2400, Development of key technologies for commercial quantum cryptography communication system, Noh Tae-Gon
- Abstract
- An apparatus for cancellation of a transient voltage spike, includes: a first photodiode for detecting a photon in an optical signal input from an outside, a second photodiode for detecting the photon in the optical signal input from the outside, and a differential amplifier for canceling the same signal component in a first output signal of the first photodiode and a second output signal output from the second photodiode, and to amplify a voltage difference between the first output signal and the second output signal. The transient voltage spike cancellation apparatus cancel a transient voltage spike occurring in an avalanche photodiode operating in a gated Geiger mode, using the differential amplifier.