The Experts below are selected from a list of 545805 Experts worldwide ranked by ideXlab platform
Moshe Tur - One of the best experts on this subject based on the ideXlab platform.
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mode division multiplexing using an orbital angular momentum mode sorter and mimo dsp over a graded index few mode optical fibre
Scientific Reports, 2015Co-Authors: Hao Huang, Giovanni Milione, Martin P J Lavery, Guodong Xie, Yongxiong Ren, Yinwen Cao, Nisar Ahmed, Thien An Nguyen, Daniel A Nolan, Moshe TurAbstract:Mode division multiplexing (MDM)- using a multimode optical fiber's N spatial modes as data channels to transmit N independent data streams - has received interest as it can potentially increase optical fiber data transmission capacity N-times with respect to single mode optical fibers. Two challenges of MDM are (1) designing mode (de)Multiplexers with high mode selectivity (2) designing mode (de)Multiplexers without cascaded beam splitting's 1/N insertion loss. One spatial mode basis that has received interest is that of orbital angular momentum (OAM) modes. In this paper, using a device referred to as an OAM mode sorter, we show that OAM modes can be (de)multiplexed over a multimode optical fiber with higher than -15 dB mode selectivity and without cascaded beam splitting's 1/N insertion loss. As a proof of concept, the OAM modes of the LP11 mode group (OAM-1,0 and OAM+1,0), each carrying 20-Gbit/s polarization division multiplexed and quadrature phase shift keyed data streams, are transmitted 5km over a graded-index, few-mode optical fibre. Channel crosstalk is mitigated using 4 × 4 multiple-input-multiple-output digital-signal-processing with <1.5 dB power penalties at a bit-error-rate of 2 × 10(-3).
Kyung Jun Park - One of the best experts on this subject based on the ideXlab platform.
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mode division multiplexed optical transmission enabled by all fiber mode Multiplexer
Optics Express, 2014Co-Authors: Sun Hyok Chang, Nicolas K Fontaine, Hwan Seok Chung, Kyung Jun ParkAbstract:Mode division multiplexed optical transmission enabled by all-fiber mode Multiplexer is investigated. The proposed all-fiber mode Multiplexer is composed of consecutive mode selective couplers. It multiplexes or demultiplexes LP01, LP11, LP21, and LP02 modes simultaneously. We demonstrate successful transmission of three spatial modes with 120 Gb/s PDM-QPSK signals over 15 km of four mode fiber by using 6x6 MIMO digital signal processing.
Daoxin Dai - One of the best experts on this subject based on the ideXlab platform.
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10 channel mode de Multiplexer with dual polarizations
Laser & Photonics Reviews, 2018Co-Authors: Daoxin Dai, Yaocheng Shi, Shipeng Wang, Shiming Gao, Tingge Dai, Hon Ki TsangAbstract:A dual-polarization 10-channel mode (de)Multiplexer is proposed and realized with cascaded dual-core adiabatic tapers on a silicon-on-insulator (SOI) platform. The mode deMultiplexer has a 2.3 μm-wide multimode bus waveguide, which supports six mode-channels of TE polarization and four mode-channels of TM polarization. These ten mode-channels are (de)multiplexed with five cascaded dual-core adiabatic tapers based on SOI nanowires. The widths for these dual-cores are chosen optimally according to the dispersion curves of the dual-core SOI nanowire, so that the desired highest-order modes of TE- and TM-polarizations are extracted simultaneously. These two extracted mode-channels are coupled very efficiently to the fundamental modes of TE- and TM-polarizations (TE0 and TM0) in the narrow waveguide, respectively, which are then separated by using a polarization beam splitter based on bent directional couplers. A chip consisting of a pair of 10-channel mode (de)Multiplexers is fabricated and then tested with data transmission of 30Gbps/channel. The measurement results show that all TM- and TE mode-channels have low crosstalks (–15∼–25 dB) and low excess losses (0.2∼1.8 dB) over a broad wavelength band of ∼90 nm, which makes it WDM (wavelength-division-multiplexing)-compatible and thus suitable for high capacity on-chip optical interconnects.
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silicon mode de Multiplexer enabling high capacity photonic networks on chip with a single wavelength carrier light
Optics Letters, 2013Co-Authors: Daoxin Dai, Jian Wang, Yaocheng ShiAbstract:A small silicon mode (de)Multiplexer with cascaded asymmetrical directional couplers is demonstrated experimentally. As an example, a four channel mode (de)Multiplexer is designed and realized for TM polarization. The fabricated mode (de)Multiplexer has a low excess loss (<1 dB) as well as low crosstalk (≤23 dB) over a broad wavelength range (∼20 nm). More channels can be achieved with two sets of orthogonal-polarization modes (e.g., 2N=8) multiplexed when desired.
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silicon multimode photonic integrated devices for on chip mode division multiplexed optical interconnects
Progress in Electromagnetics Research-pier, 2013Co-Authors: Daoxin Dai, Jian Wang, Sailing HeAbstract:Multimode spatial-division multiplexing (SDM) technol- ogy has attracted much attention for its potential to enhance the ca- pacity of an optical-interconnect link with a single wavelength car- rier. For a mode-multiplexed optical-interconnect link, the functional elements are quite difierent from the conventional ones as multiple modes are involved. In this paper we give a review and discussion on multimode photonic integrated devices for mode-multiplexed optical- interconnects. Light propagation and mode conversion in tapered waveguides as well as bent waveguides are discussed flrst. Recent progress on mode converter-(de)Multiplexers is then reviewed. The demands of some functional devices used for mode-multiplexed optical- interconnects are also discussed. In particular, the fabrication toler- ance is analyzed in detail for our hybrid deMultiplexer, which enables mode-/polarization-division-(de)multiplexing simultaneously.
Hao Huang - One of the best experts on this subject based on the ideXlab platform.
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mode division multiplexing using an orbital angular momentum mode sorter and mimo dsp over a graded index few mode optical fibre
Scientific Reports, 2015Co-Authors: Hao Huang, Giovanni Milione, Martin P J Lavery, Guodong Xie, Yongxiong Ren, Yinwen Cao, Nisar Ahmed, Thien An Nguyen, Daniel A Nolan, Moshe TurAbstract:Mode division multiplexing (MDM)- using a multimode optical fiber's N spatial modes as data channels to transmit N independent data streams - has received interest as it can potentially increase optical fiber data transmission capacity N-times with respect to single mode optical fibers. Two challenges of MDM are (1) designing mode (de)Multiplexers with high mode selectivity (2) designing mode (de)Multiplexers without cascaded beam splitting's 1/N insertion loss. One spatial mode basis that has received interest is that of orbital angular momentum (OAM) modes. In this paper, using a device referred to as an OAM mode sorter, we show that OAM modes can be (de)multiplexed over a multimode optical fiber with higher than -15 dB mode selectivity and without cascaded beam splitting's 1/N insertion loss. As a proof of concept, the OAM modes of the LP11 mode group (OAM-1,0 and OAM+1,0), each carrying 20-Gbit/s polarization division multiplexed and quadrature phase shift keyed data streams, are transmitted 5km over a graded-index, few-mode optical fibre. Channel crosstalk is mitigated using 4 × 4 multiple-input-multiple-output digital-signal-processing with <1.5 dB power penalties at a bit-error-rate of 2 × 10(-3).
Nicolas K Fontaine - One of the best experts on this subject based on the ideXlab platform.
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recent advances in mode multiplexed transmission over multimode fibers
Conference on Lasers and Electro-Optics, 2019Co-Authors: Roland Ryf, Nicolas K Fontaine, Steffen Wittek, Karthik Choutagunta, Mikael Mazur, Haoshuo Chen, Juan Carlos AlvaradozacariasAbstract:We present latest advances in multimode fibers and components for mode-multiplexed transmission. In particular we will review large mode count mode-Multiplexer and characterization techniques for multimode components and provide a summary of the latest transmission results. © 2019 The Author(s)
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mode division multiplexed optical transmission enabled by all fiber mode Multiplexer
Optics Express, 2014Co-Authors: Sun Hyok Chang, Nicolas K Fontaine, Hwan Seok Chung, Kyung Jun ParkAbstract:Mode division multiplexed optical transmission enabled by all-fiber mode Multiplexer is investigated. The proposed all-fiber mode Multiplexer is composed of consecutive mode selective couplers. It multiplexes or demultiplexes LP01, LP11, LP21, and LP02 modes simultaneously. We demonstrate successful transmission of three spatial modes with 120 Gb/s PDM-QPSK signals over 15 km of four mode fiber by using 6x6 MIMO digital signal processing.
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characterization of space division multiplexing systems using a swept wavelength interferometer
Optical Fiber Communication Conference, 2013Co-Authors: Nicolas K Fontaine, Roland Ryf, M A Mestre, Binbin Guan, X Palou, S Randel, Yi Sun, L Grunernielsen, R V Jensen, Robert LingleAbstract:We present single-scan measurements of the transfer matrix of space-division multiplexed systems including the mode-Multiplexers and fibers. We obtain the mode-dependent loss, and differential group delay over 110-nm of bandwidth of a 4.7-km 3-mode fiber.