Secured optical fiber communication using polarization restoration technique and channel characterization

Nikhil Punekar; Bhagyashri Darunkar; Pramode Verma

doi:10.1117/12.2216512

13 February 2016 Secured optical fiber communication using polarization restoration technique and channel characterization

Nikhil Punekar, Bhagyashri Darunkar, Pramode Verma

Author Affiliations +

Proceedings Volume 9774, Next-Generation Optical Communication: Components, Sub-Systems, and Systems V; 97740F (2016) https://doi.org/10.1117/12.2216512
Event: SPIE OPTO, 2016, San Francisco, California, United States

Abstract

Optical fiber channels are used as media to transfer the information globally. This paper presents an implementation of a novel procedure using which a secured communication between two parties can be carried out using polarized beam of light over an optical fiber. The paper presents the experimental results obtained of the procedure in the lab environment and a security analysis of the same. It is observed that polarization state of a light pulse cannot be retained as it travels over an optical fiber because of the birefringence phenomenon. Multiple environmental factors such as pressure, vibration, temperature, etc. also add a non-linearity to the birefringence of an optical fiber leading towards an unpredictable polarization state changes over the course of an optical fiber. The proposed procedure helps the receiving party to successfully retrieve the data in the form of a polarization state transmitted by the sending party without having any knowledge about the state of polarization at the transmitting end. The paper also explains an added layer of security the procedure provides to the communicating parties to make it difficult for an adversary to fetch the data being transferred. The proposed system does not depend on the wavelength of the light being used, nor does it depend upon the type of the optical fiber used for the communication. Using this procedure, multiple bits of secured information can be sent over an optical fiber in a single polarized pulse and retrieved at the receiving end, also known as Polarization Shift Keying.

Citation Download Citation

Nikhil Punekar, Bhagyashri Darunkar, and Pramode Verma "Secured optical fiber communication using polarization restoration technique and channel characterization", Proc. SPIE 9774, Next-Generation Optical Communication: Components, Sub-Systems, and Systems V, 97740F (13 February 2016); https://doi.org/10.1117/12.2216512

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