K Alan Shore

Prof. K Alan Shore

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Research Focus & Metrics

Academic Career Length

25Years (2002-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 June 2021 in APL Photonics
Verified
Journal Article
Open access
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YGYa Guo
Ya Guo
QCQiang Cai
Qiang Cai
PLPu Li
Pu Li
ZJZhiwei Jia
Zhiwei Jia
BXBingjie Xu
Bingjie Xu
YWYuncai Wang
Yuncai Wang
We present a photonic approach for fast quantum random number generation based on optically sampled amplified spontaneous emission (ASE). This approach utilizes a terahertz optical asymmetric demultiplexer to sample the ASE and then digitize the sampled optical pulses into random bits using a multi-bit parallel comparator. A proof-of-concept experiment demonstrates that 40 Gb/s random bits with verified randomness can be obtained using our method. The current generation rate is mainly limited by the bandwidth of the available ASE source.

14 September 2016 in IEEE Journal of Quantum Electronics
Verified
Journal Article
Closed access
HHHong Han
Hong Han
KSK Alan Shore
K Alan Shore
The dynamics of mutually coupled nano-lasers has been explored theoretically. Calculations have been performed using rate equations which include the Purcell cavity-enhanced spontaneous emission factor F and the spontaneous emission coupling factor β. In the analysis, the influence of F and β has been evaluated for varying optical injection strength and distance between the two lasers. It is observed that, in general, for increased bias current, the system can maintain stable output for a larger mutual coupling strength. It is also found that for short inter-laser distances and larger F, the stability of mutually coupled nano-lasers is enhanced.

27 September 2010 in IEEE Photonics Technology Letters
Verified
Journal Article
Open access
SLSeoung Hun Lee
Seoung Hun Lee
HJHae won Jung
Hae won Jung
KKKyong Hon Kim
Kyong Hon Kim
MLMin Hee Lee
Min Hee Lee
BYByeung-Soo Yoo
Byeung-Soo Yoo
KSK Alan Shore
K Alan Shore
All-optical set-reset flip-flop operations of conventional circular cylindrical-shaped 1.55-μm wavelength single-mode vertical-cavity surface-emitting lasers (VCSELs) have been demonstrated at a switching frequency of 1 GHz based on polarization bistability observed via injection current variation. The energy of set and reset pulses was lower than 4.5 fJ at a bias current of the VCSEL of 4 mA. Polarization bistable VCSELs will be useful for high-speed optical signal processing applications.

1 November 2019 in IEEE Journal of Quantum Electronics
Verified
Journal Article
Closed access
LWLongsheng Wang
Longsheng Wang
DWDaming Wang
Daming Wang
HGHua Gao
Hua Gao
YGYuanyuan Guo
Yuanyuan Guo
YWYuncai Wang
Yuncai Wang
AWAnbang Wang
Anbang Wang
We experimentally demonstrate high-speed correlated random bit generation in real time using synchronized chaotic lasers commonly driven by a laser with dispersive feedback. The dispersive feedback from a chirped fiber Bragg grating induces frequency-dependent feedback delay and thus no longer causes time-delay signature, and resultantly ensures the signal randomness and security of chaotic laser. Driven by the time-delay signature-free chaotic signal, the two response lasers are routed into chaotic states and establish a synchronization with correlation beyond 0.97 while they maintain a low correlation level with the drive signal. Through quantizing the synchronized laser chaos with a one-bit differential comparator, real-time 2.5-Gb/s correlated random bits with verified randomness are experimentally obtained with a bit error ratio of 0.07. Combining with a robust sampling method, the BER could be further decreased to 1W10-4 corresponding to an effective generation rate of 1.7 Gb/s. Bit error analysis indicates that the bit error ratio between the responses is lower than that between the drive and responses over a wide parameter region due to the synchronization superiority of the responses over the drive.

4 April 2019 in IEEE Journal of Quantum Electronics
Verified
Journal Article
Closed access
HHHong Han
Hong Han
MZMiangjiang Zhang
Miangjiang Zhang
KSK Alan Shore
K Alan Shore

25 June 2014 in Contemporary Physics
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Journal Article
Closed access
KSK Alan Shore
K Alan Shore
(2014). Electronic Processes in Non-crystalline Materials (Second Edition), by N.F. Mott and E.A. Davis. Contemporary Physics: Vol. 55, No. 4, pp. 337-337.