Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Random bit generation at tunable rates using a chaotic semiconductor laser under distributed feedback

Not Accessible

Your library or personal account may give you access

Abstract

A semiconductor laser with distributed feedback from a fiber Bragg grating (FBG) is investigated for random bit generation (RBG). The feedback perturbs the laser to emit chaotically with the intensity being sampled periodically. The samples are then converted into random bits by a simple postprocessing of self-differencing and selecting bits. Unlike a conventional mirror that provides localized feedback, the FBG provides distributed feedback which effectively suppresses the information of the round-trip feedback delay time. Randomness is ensured even when the sampling period is commensurate with the feedback delay between the laser and the grating. Consequently, in RBG, the FBG feedback enables continuous tuning of the output bit rate, reduces the minimum sampling period, and increases the number of bits selected per sample. RBG is experimentally investigated at a sampling period continuously tunable from over 16 ns down to 50 ps, while the feedback delay is fixed at 7.7 ns. By selecting 5 least-significant bits per sample, output bit rates from 0.3 to 100 Gbps are achieved with randomness examined by the National Institute of Standards and Technology test suite.

© 2015 Optical Society of America

Full Article  |  PDF Article
More Like This
Time-delay signature suppression in a chaotic semiconductor laser by fiber random grating induced random distributed feedback

Yanping Xu, Mingjiang Zhang, Liang Zhang, Ping Lu, Stephen Mihailov, and Xiaoyi Bao
Opt. Lett. 42(20) 4107-4110 (2017)

Fully photonics-based physical random bit generator

Pu Li, Yuanyuan Sun, Xianglian Liu, Xiaogang Yi, Jianguo Zhang, Xiaomin Guo, Yanqiang Guo, and Yuncai Wang
Opt. Lett. 41(14) 3347-3350 (2016)

Random bit generation using an optically injected semiconductor laser in chaos with oversampling

Xiao-Zhou Li and Sze-Chun Chan
Opt. Lett. 37(11) 2163-2165 (2012)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved