Free Space Optical Polarization De-multiplexing and Multiplexing by means of Conical Refraction

Abstract

Polarization de-multiplexing and multiplexing by means of conical refraction is proposed to increase the channel capacity for free space optical communication applications. The proposed technique is based on the forward-backward optical transform occurring when a light beam propagates consecutively along the optic axes of two identical biaxial crystals with opposite orientations of their conical refraction characteristic vectors. We present experimental proof of usefulness of the conical refraction de-multiplexing and multiplexing technique by increasing in one order of magnitude the channel capacity at optical frequencies in a propagation distance of 4m.

References in corpus (1)

• Efficient generation and control of different order orbital angular momentum states for communication links

Cited by in corpus (8)

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• On the dual-cone nature of the conical refraction phenomenon
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• Transformation of vector beams with radial and azimuthal polarizations in biaxial crystals