Principle of Coherence Optical Systems-Current Applications and Future Challenges

Arun Agarwal^1, , Kabita Agarwal², Gourav Misra³ and Subrat Kumar Panda⁴

¹Department of ECE, Institute of Technical Education & Research (ITER), Siksha ‘O’ Anusandhan Deemed to be University, Khandagiri Square, Bhubaneswar-751030, Odisha, India

²Department of Electronics and Instrumentation Engineering, College of Engineering & Technology (CET), Ghatikia, Kalinga Nagar, Bhubaneswar-751003, Odisha, India

³School of Electronic Engineering, Dublin City University, Glasnevin, Dublin 9, Ireland

⁴Department of ECE, Gandhi Institute For Technology (GIFT), Gramadiha, PO-Gangapada, Bhubaneswar-752054, Odisha, India

Cite this paper

Arun Agarwal, Kabita Agarwal, Gourav Misra and Subrat Kumar Panda. Principle of Coherence Optical Systems-Current Applications and Future Challenges. American Journal of Electrical and Electronic Engineering. 2019; 7(4):94-98. doi: 10.12691/AJEEE-7-4-2

Abstract

This paper reviews the concept of coherent optical systems as future digital optical communication systems having capacity of achieving 100Gbps speed. While the transmission capacity increases in wavelength-division multiplexed (WDM) system, coherent technologies have been in large interest in recent years. The interest lies in finding methods of increasing the bandwidth demand with multilevel modulation formats based on coherent technologies. We also discuss about requirements and challenges in implementation of respective digital receivers and associated signal processing.

Keywords

optical systems, WDM, coherent, bandwidth, signal processing, digital receivers

Copyright

This work is licensed under a Creative Commons Attribution 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

References

[1]	www.photonics.ntua.gr/.../Lecture_4_CoherentOptical_DSP.pdf.
[2]	Kazuro Kikuchi, M. Nakazawa et al. (eds.), , “Coherent Optical Communications: Historical Perspectives and Future Directions”, High Spectral Density Optical Communication Technologies, Optical and Fiber Communications Reports 6, C Springer-Verlag Berlin Heidelberg 2010.
[3]	Monika Nehra and Deepak Kedia, Design of Optical I/Q Modulator Using Dual-drive Mach Zehnder Modulators in Coherent Optical-OFDM System, J. Opt. Commun. 2018; 39(2): 155-159.