M
Manas Kumar Haldar
Researcher at Universiti Malaysia Sabah
Publications - 88
Citations - 681
Manas Kumar Haldar is an academic researcher from Universiti Malaysia Sabah. The author has contributed to research in topics: Band-pass filter & Semiconductor laser theory. The author has an hindex of 12, co-authored 88 publications receiving 617 citations. Previous affiliations of Manas Kumar Haldar include Swinburne University of Technology & Institute for Infocomm Research Singapore.
Papers
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Journal ArticleDOI
Enhancement of modulation bandwidth of laser diodes by injection locking
TL;DR: In this article, the authors suggest a new method for significantly enhancing the intrinsic bandwidth of a laser diode through the use of an injection locking technique, which shows that for moderate and high injection levels, the bandwidth can be increased to several times its free-running bandwidth.
Proceedings ArticleDOI
Performance of Secondary Radios in Spectrum Sharing with Prioritized Primary Access
TL;DR: The analysis provides an insightful study about how the secondary system capacity is determined by its GoS requirement, and shows that when the secondary call dropping probability is the cause of low capacity, by suitably reserving a number of frequency slots for primary users' access, the primary system capacity can be improved significantly.
Journal ArticleDOI
A simplified analysis of direct intensity modulation of quantum cascade lasers
TL;DR: In this article, the authors used simplified rate equations to analyze the terahertz direct intensity modulation (IM) response of quantum cascade laser (QCL) and showed that for slow carrier removal rates, associated with large bias currents, a peak can appear in the IM response for reasons entirely different from those for the peak in IM response of interband lasers.
Journal ArticleDOI
A Survey on Biometrics and Cancelable Biometrics Systems
TL;DR: Now-a-days, biometric systems have replaced the password or token based authentication system in many fields to improve the security level but biometric system is also vulnerable to security threats.
Journal ArticleDOI
An Equivalent Circuit for Quantum Cascade Lasers
TL;DR: In this paper, a circuit model of a quantum cascade laser based on two level rate equations is presented, which is valid for small and large signals, and a realistic current voltage model based on experimental results is included in the circuit model.