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Conference Paper
Micro-optics based Polarization Decoding Module for Free-Space Quantum Key Distribution
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- Authors
- Byung-Seok Choi, Haesin Ko, Joong-Seon Choe, Kap-Joong Kim, Chun Ju Youn, Jong-Hoi Kim, Yongsoon Baek
- Issue Date
- 2018-07
- Citation
- Opto-Electronics and Communications Conference (OECC) 2018, pp.1-2
- Language
- English
- Type
- Conference Paper
- Abstract
- We demonstrate a compact polarization decoding module with the size of 2 cm × 2 cm × 1 cm for a free space quantum key distribution based on micro-optics. The insertion loss and polarization extinction ratio (PER) of this module are <4.6dB and >22.8 dB, respectively, and large alignment tolerance is achieved owing to multimode fiber pigtailing. The quantum bit error rate (QBER) are measured to be 0.67% with the sifted key rate of 576 kb/s at the clock rate of 100 MHz.
- KSP Keywords
- 100 MHz, Bit Error Rate(Ber), Extinction ratio(ER), Multimode fiber, Quantum Key Distribution, Quantum bit error rate(QBER), alignment tolerance, compact polarization, free space, insertion loss, micro-optics