Design of a Compact Two-Mode Multi/Demultiplexer Consisting of Multimode Interference Waveguides and a Wavelength-Insensitive Phase Shifter for Mode-Division Multiplexing Transmission

Uematsu, Toshio; Ishizaka, Yuhei; Kawaguchi, Yuki; Saitoh, Kunimasa; Koshiba, Masanori

doi:10.1109/jlt.2012.2199961

Cited by 272 publications

(107 citation statements)

References 26 publications

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“…Previous implementations of on-chip mode multiplexers based on Mach-Zehnder interferometers 20,21 , Multimode Interference couplers [22][23][24] , asymmetric directional couplers [25][26][27] and y-junctions [28][29][30] typically had large footprints, complex and strict design limitations or only supported a limited number of optical modes. A compact and reconfigurable mode (de)multiplexer that can be straight-forwardly scaled to support numerous modes is essential for realizing MDM-WDM in integrated photonics.…”

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confidence: 99%

WDM-compatible mode-division multiplexing on a silicon chip

et al. 2014

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Significant effort in optical-fibre research has been put in recent years into realizing mode-division multiplexing (MDM) in conjunction with wavelength-division multiplexing (WDM) to enable further scaling of the communication bandwidth per fibre. In contrast, almost all integrated photonics operate exclusively in the single-mode regime. MDM is rarely considered for integrated photonics because of the difficulty in coupling selectively to high-order modes, which usually results in high inter-modal crosstalk. Here we show the first microring-based demonstration of on-chip WDM-compatible mode-division multiplexing with low modal crosstalk and loss. Our approach can potentially increase the aggregate data rate by many times for on-chip ultrahigh bandwidth communications.

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confidence: 99%

WDM-compatible mode-division multiplexing on a silicon chip

et al. 2014

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“…[12][13][14][15] Various silicon-based on-chip (de)multiplexers have been demonstrated in the past years, [6] including arrayed-waveguide gratings for WDM, [17] and onchip polarization-handling devices for PDM, [18] as well as mode (de)multiplexers for MDM. [19][20][21] In particular, mode (de)multiplexer for MDM have been proposed by utilizing multimode interferometers, [22] asymmetric Y-junctions, [23,24] topology structures, [25] adiabatic couplers, [26,27] and asymmetric directional couplers (ADCs), [28][29][30] etc. Among them, ADC-based mode (de)multiplexers are popular [30] because of the structural simplicity, the scalability, and the flexibility to excite a desired high-order mode from a launched fundamental mode.…”

Section: Doi: 101002/lpor201700109mentioning

confidence: 99%

10‐Channel Mode (de)multiplexer with Dual Polarizations

Dai

Wang

et al. 2017

Laser & Photonics Reviews

265

107

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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 (TE 0 and TM 0 ) 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 (-15ß-25 dB) and low excess losses (0.2ß1.8 dB) over a broad wavelength band of ß90 nm, which makes it WDM (wavelength-division-multiplexing)-compatible and thus suitable for high capacity on-chip optical interconnects.

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“…In Ref. [75], a ∼ 18 µm-long on-chip mode converter is demonstrated with a Mach-Zehnder interferometer (MZI) to realize the mode conversion between the "zero-th" and firstorder optical modes. However, this is hard to be extended for realizing the mode conversion from the fundamental mode to a desired higherorder mode.…”

Section: Mode Converter-multiplexermentioning

confidence: 99%

“…In this paper we focus on the SDM technology, which has attracted intensive attention for long-haul optical fiber communications to improve the capacity by using multi-core [6] as well as multimode optical fibers or waveguides [7,8]. The SDM technology is also attractive for optical interconnects in data centers where upgrading an existing network or installing a new network is relatively simple [9][10][11][12]. It becomes even more convenient to apply the SDM technology to photonic networks-on-chip because planar optical waveguides can be fabricated precisely within the chip to control accurately the propagation of guided-modes and the eigen-modes could be converted, transferred or coupled conveniently between planar optical waveguides with some specific structures.…”

Section: Introductionmentioning

confidence: 99%

Silicon Multimode Photonic Integrated Devices for on-Chip Mode-Division-Multiplexed Optical Interconnects

Dai¹,

Jian²,

He³

2013

PIER

117

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Abstract-Multimode spatial-division multiplexing (SDM) technology has attracted much attention for its potential to enhance the capacity of an optical-interconnect link with a single wavelength carrier. For a mode-multiplexed optical-interconnect link, the functional elements are quite different 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 opticalinterconnects. Light propagation and mode conversion in tapered waveguides as well as bent waveguides are discussed first. Recent progress on mode converter-(de)multiplexers is then reviewed. The demands of some functional devices used for mode-multiplexed opticalinterconnects are also discussed. In particular, the fabrication tolerance is analyzed in detail for our hybrid demultiplexer, which enables mode-/polarization-division-(de)multiplexing simultaneously.

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Design of a Compact Two-Mode Multi/Demultiplexer Consisting of Multimode Interference Waveguides and a Wavelength-Insensitive Phase Shifter for Mode-Division Multiplexing Transmission

Cited by 272 publications

References 26 publications

WDM-compatible mode-division multiplexing on a silicon chip

WDM-compatible mode-division multiplexing on a silicon chip

10‐Channel Mode (de)multiplexer with Dual Polarizations

Silicon Multimode Photonic Integrated Devices for on-Chip Mode-Division-Multiplexed Optical Interconnects

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