An order of magnitude improvement in optical fiber bandwidth using spatial domain multiplexing/space division multiplexing (SDM) in conjunction with orbital angular momentum (OAM)

Syed Murshid; Saud Alanzi; Arnob Hridoy; Greg Lovell; Gurinder Parhar; Abhijit Chakravarty; Bilas Chowdhury

doi:10.1117/12.2061122

5 September 2014 An order of magnitude improvement in optical fiber bandwidth using spatial domain multiplexing/space division multiplexing (SDM) in conjunction with orbital angular momentum (OAM)

Syed Murshid, Saud Alanzi, Arnob Hridoy, Greg Lovell, Gurinder Parhar, Abhijit Chakravarty, Bilas Chowdhury

Author Affiliations +

Proceedings Volume 9202, Photonics Applications for Aviation, Aerospace, Commercial, and Harsh Environments V; 92020U (2014) https://doi.org/10.1117/12.2061122
Event: SPIE Optical Engineering + Applications, 2014, San Diego, California, United States

Abstract

Spatial Domain Multiplexing/Space Division Multiplexing (SDM) can increase the bandwidth of existing and futuristic optical fibers by an order of magnitude or more. In the SDM technique, we launch multiple single mode pigtail laser sources of same wavelength into a carrier fiber at different angles. The launching angles decide the output of the carrier fiber by allocating separate spatial locations for each channel. Each channel follows a helical trajectory while traversing the length of the carrier fiber, thereby allowing spatial reuse of optical frequencies. In this endeavor we launch light from five different single mode pigtail laser sources at different angles (with respect to the axis of the carrier fiber) into the carrier fiber. Owing to helical propagation we get five distinct concentric donut shaped rings with negligible crosstalk at the output end of the fiber. These SDM channels also exhibit Orbital Angular Momentum (OAM), thereby adding an extra degree of photon freedom. We present the experimental data of five spatially multiplexed channels and compare them with simulated results to show that this technique can potentially improve the data capacity of optical fibers by an order of magnitude: A factor of five using SDM and another factor of two using OAM.

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Syed Murshid, Saud Alanzi, Arnob Hridoy, Greg Lovell, Gurinder Parhar, Abhijit Chakravarty, and Bilas Chowdhury "An order of magnitude improvement in optical fiber bandwidth using spatial domain multiplexing/space division multiplexing (SDM) in conjunction with orbital angular momentum (OAM)", Proc. SPIE 9202, Photonics Applications for Aviation, Aerospace, Commercial, and Harsh Environments V, 92020U (5 September 2014); https://doi.org/10.1117/12.2061122

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