Femtosecond laser written integrated passive mode-multiplexers
Date
2015
Authors
Gross, S.
Riesen, N.
Love, J.
Withford, M.
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Conference paper
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Optics InfoBase Conference Papers, 2015, vol.Part F4-CLEO 2015, pp.1-1
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The European Conference on Lasers and Electro-Optics (21 Jun 2015 - 25 Jun 2015 : Munich, Germany)
Abstract
Single-mode (SM) optical fibres are rapidly approaching their transmission capacity limit. Mode-division multiplexing (MDM) is considered as one of the most promising techniques to overcome this [1]. MDM refers to using few-mode optical fibres, where each mode is used as an individual data channel. Thereby the data transmission capacity can be scaled proportional to the number of modes. However, using few-mode fibres requires the selective multiplexing and demultiplexing of individual modes. Common approaches include long-period gratings, phase-plates and liquid-crystal spatial light modulators [2]. However these techniques either suffer from a complex optical setup, high losses or a limited spectral bandwidth. In contrast integrated optics offer low losses, excellent compatibility with fibres, compact and entirely passive setups as well as an inherent robustness. However, 3-dimensional waveguide circuits are required in order to multiplex and de-multiplex all orientation states of the LP modes, making the use of traditional planar lightwave circuits challenging [3].
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Copyright 2015 OSA