Topic
Mode scrambler
About: Mode scrambler is a research topic. Over the lifetime, 896 publications have been published within this topic receiving 13595 citations.
Papers published on a yearly basis
Papers
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TL;DR: In this article, a polarization scrambler was used to increase the response stability of a fiber Mach-Zehnder interferometer with respect to the Faraday effect, based on simulation results.
3 citations
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08 Oct 2015TL;DR: In this paper, a novel type of interferometer with an ultra-small footprint is presented based on the excitation of the first and second order modes in an integrated dual-mode strip waveguide.
Abstract: A novel type of interferometer with an ultra-small footprint is presented. The functional principle is based on the excitation of the first and the second order modes in an integrated dual-mode strip waveguide. The light is coupled from a single mode fiber to the dual-mode waveguide by a conventional grating coupler followed by a taper. The difference in the mode propagation velocity leads to a phase difference between the fundamental mode and the second order mode. A proof of concept in the silicon on insulator technology shows promising extinction ratios of around 30 dB.
3 citations
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28 Apr 2014TL;DR: In this article, the authors investigated the bending characteristics of the Single mode-Multimode-Single mode (SMS) fiber section concatenation, where multimode interference in the multimode section leads to the formation of a self-image of the single mode excitation onto the output single mode fiber core.
Abstract: Multimode interference has been used in many integrated and fiber-optic devices, including sensors. A basic structure proposed for sensing using this phenomenon is the Single mode-Multimode-Single mode (SMS) fiber section concatenation, where multimode interference in the multimode section leads to the formation of a self-image of the single mode excitation onto the output single mode fiber core. The perturbation of modal interference in the multimode section by a changing measurand provides the basis for sensing. This paper reports on an investigation of the bending characteristics of these structures for their possible use as bending sensors. Numerical simulations using the beam propagation method are used to explore the sensitivity of SMS structures of parabolic and step-index multimode fibers to bending. The results of experimental examination of a realized SMS fiber structure are related to its bending characteristics obtained by simulations. It is concluded that SMS fiber structures of step-index multimode sections are expected to be more suitable than graded-index fiber structures for use as bending sensors in the range of bending radii of practical interest.
3 citations
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22 Mar 2015TL;DR: This work studies the performance of six-mode and ten-mode fiber-based SDM systems impaired by mode-dependent-loss when selecting an appropriate set of modes for multiplexing at the transmitter, and detecting more modes at the receiver.
Abstract: We study the performance of six-mode and ten-mode fiber-based SDM systems impaired by mode-dependent-loss when selecting an appropriate set of modes for multiplexing at the transmitter, and detecting more modes at the receiver.
3 citations
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TL;DR: In this article, an all-optical demultiplexer based on dynamic multiple holograms using a photorefractive material for modedivision multiplexing and optical MIMO processing systems was proposed.
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 LP 0,1 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.
3 citations