DR. BIBHU PRASAD
@giet.edu
ASSISTANT PROFESSOR ECE
GIET UNIVERSITY
RESEARCH INTERESTS
OPTICAL COMMUNICATION , SIGNAL PROCESSING
Scopus Publications
Scopus Publications
Dipan Kumar Dey, Bibhu Prasad, Gopinath Palai, and Partha Sarkar
Springer Science and Business Media LLC
Padmini Mishra, Bibhu Prasad, Gopinath Palai, Partha Sarkar, and Tusharkant Panda
Springer Science and Business Media LLC
Bandana Mallick, Priyadarsan Parida, Chittaranjan Nayak, Bibhu Prasad, Gopinath Palai, Amit Kumar Goyal, and Yehia Massoud
Optica Publishing Group
Implementation of the passive radio over-fiber technique permits modulating the low-frequency sub-carrier onto an optical channel for dissemination through a light-wave fiber network. Single-sideband modulation for optical signals allows the impressive utilization of channel capacity in optical fiber. Dispersion reduction techniques limit the pulse spreading of a propagated signal in any photonic scheme. To control pulse-spreading effects, the optical single-sideband modulation technique at different phase shifts is modeled, analyzed, and compared to examine the performance of a sub-carrier multiplexing system. Hence, in this paper, a quantum key distribution network using a single sideband modulation technique based on a Li-Nb Mach-Zehnder modulator has been proposed at different electrical phase shifts. In this suggested model, the Optisystem 14.2 simulator is used to analyze the nonlinear characteristics. We have designed a single-sideband contour reduction and amplification with each couplet of 120 km by increasing the distance up to 720 km, and the phase between quantum states is determined. The system performance of the suggested model is investigated and compared based on output power (dBm), quality factor, eye diagram, bit error rate (BER), extinction ratio (ER), and optical spectrum of the received signal by varying link distance (km), channel spacing (nm), input power (dBm), and fiber dispersion (ps/ns/km).
Bibhu Prasad, Bandana Mallick, Krishna Chandra Patra, and Nalini Kanta Barpanda
Walter de Gruyter GmbH
Abstract In free space optics (FSO) optics, the tweaked optical sign is transmitted at different climate conditions like day off, Mist, and Haze, which is a new paragon to the field of optical communication. Further to realize the same, the present research analyzes the framework performance by executing two adjustment strategies amplitude shift keying (ASK) and Phase shift keying (PSK). Moreover, article investigates the performance of applied modulation-based free space optic system using a coupler-based delay line filter. Aside this, the recreation results are examined and natter about the dependent of quality factor, bit error rate (BER), and eye outline of various FSO parameters pertaining to the same. The outcomes of the research bestow on the recreation results acquired for quality factor and BER against various conditions with respect to the both adjustment techniques and PSK offers better execution.
Bibhu Prasad, Bandana Mallick, Krishna Chandra Patra, and Nalini Kant Barpanda
IEEE
Digital filters can be implemented to reduce chromatic dispersion occur in time & the frequency domain. Generally dispersion compensation fiber (DCF) is used to compact the fiber dispersion. But different algorithms like adaptive least mean square (LMS) and constant modulus algorithm (CMA) can be adopted in time domain as dispersion compensator. This paper implies a scrutinization of digital filter to reduce intra-modal dispersion, an schematic assessment of filter characteristics based on digital equalization methods and short analysis raised cosine filter. Simulation results show that the suggested algorithm is an adequate method to estimate intra-modal dispersion in dispersionless light wave propagation of 112 gbps PDM-QPSK.