INVESTIGATION OF DISPERSION ORDER ON CHIRP MICROWAVE GENERATION USING MICROWAVE PHOTONIC LINK WITHOUT OPTICAL FILTER

Document Type : Article

Authors

1 Department of Electronics & Communication Engineering, Photonic Research Laboratory (PRL), Indian Institute of Technology, Roorkee 247667, Uttarakhand, India

2 Department of Electronics Engineering, Indian Institute of Technology (ISM), Dhanbad 826004, Jharkhand, India

Abstract

In this work, we investigate the influence of the second order-(2OD) and third order-(3OD) dispersion terms on chirp signal generation and transmission through RF photonic link without optical filter. Dispersion equations are formalised using Taylor series and Bessel function to study the link performance. Our result (Eye diagrams) shows that the 2OD+3OD have significant impact on chirp mm-wave propagating through fiber of different lengths. In this paper chirp mm signal is controlled at photo detector by individual phase term of external modulators. Moreover, we also demonstrated experimentally that the chirp rate can be significantly controlled by properly choosing the type of fiber in the experiments. We discussed the RF photonic link performance in terms of Optical Sideband Suppression Ratio (OPSSR), Radio Frequency Spurious Suppression Ratio (RFSSR), Bit Error Rate (BER). Theoretical results are verified using MATLAB Software.

Keywords

Main Subjects


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3590 M. Singh and S. Kumar Raghuwanshi/Scientia Iranica, Transactions D: Computer Science & ... 25 (2018) 3584{3590

Volume 25, Issue 6
Transactions on Computer Science & Engineering and Electrical Engineering (D)
November and December 2018
Pages 3584-3590