24 January 2011 All-optical demultiplexer based on dynamic multiple holograms for optical MIMO processing and mode division multiplexing
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Proceedings Volume 7958, Broadband Access Communication Technologies V; 79580J (2011); doi: 10.1117/12.874427
Event: SPIE OPTO, 2011, San Francisco, California, United States
Abstract
We propose an all-optical demultiplexer based on dynamic multiple holograms using a photorefractive material for mode division multiplexing and optical MIMO processing systems. This demultiplexer can separate a specific spatial mode from multiplexed modes in a multi-mode fiber. In this study, we clarify a mode separation performance with various combinations of LP modes, and show the signal-to-noise ratio (SNR) can be improved by choosing appropriate mode combinations. In addition, to reveal the dependence of mode separation of the intensity ratio of the recording lights, we study the fluctuation of the SNR for LP0,1 mode by the combinations of multiplexed modes. Moreover, two additional recording techniques with a spatial light modulator (SLM) and phase conjugator are also proposed to improve the performance of the mode separation.
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Takuya Oda, Atsushi Okamoto, Daiki Soma, Akihisa Tomita, Yuta Wakayama, "All-optical demultiplexer based on dynamic multiple holograms for optical MIMO processing and mode division multiplexing", Proc. SPIE 7958, Broadband Access Communication Technologies V, 79580J (24 January 2011); doi: 10.1117/12.874427; https://doi.org/10.1117/12.874427
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KEYWORDS
Signal to noise ratio

Holograms

Multiplexing

Demultiplexers

Spatial light modulators

Waveguides

Volume holography

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