On-chip switch for reconfigurable mode-multiplexing optical network

Sun, Chunlei; Yu, Yu; Chen, Guan-Yu; Zhang, Chi

doi:10.1364/oe.24.021722

Cited by 29 publications

(5 citation statements)

References 18 publications

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“…Among them, the on‐chip multi‐mode transmission offers a new dimension to scale the transmission bandwidth, which utilizes the multiple eigen‐modes in the multi‐mode waveguide to carry the independent signals simultaneously and efficiently enhance the link capacity for each wavelength channel . Numerous devices have been demonstrated to realize the on‐chip multi‐mode communication system, including multi‐mode waveguide crossing, multi‐mode 3‐dB power splitters, the MDM switches and the mode (de)multiplexers . However, the application is still quite limited for the multi‐mode transmission, since the multi‐mode waveguide can't be compactly routed, especially in the sharp bending region.…”

Section: Introductionmentioning

confidence: 99%

Ultra‐Sharp Multi‐Mode Waveguide Bending Assisted with Metamaterial‐Based Mode Converters

Shi

2018

Laser & Photonics Reviews

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On-chip multi-mode communication has attracted much attention for its potential to greatly expand the bandwidth of data transmission. However, the application of multi-mode transmission is still restricted since the multi-mode waveguide can't be compactly routed, especially in the sharp bending region. The challenge lies in decreasing the significant inter-mode coupling in the multi-mode bending with a small radius. Few works have been reported to achieve multi-mode bending, but all suffer from the complex fabrication. In this paper, an ultra-sharp multi-mode waveguide is proposed, which is assisted with metamaterial-based mode converters. The sub-wavelength structures are directly written onto the polymer cladding. By engineering the effective medium index of the metamaterial cladding in the mode converters, the inter-mode coupling is dramatically inhibited. The fabricated sharp bending with a 30-μm radius shows that the crosstalk is <−20 dB and the loss is <1 dB over a >80 nm wavelength band.

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Section: Introductionmentioning

confidence: 99%

Ultra‐Sharp Multi‐Mode Waveguide Bending Assisted with Metamaterial‐Based Mode Converters

Shi

2018

Laser & Photonics Reviews

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“…Even though such a DEMUX-processing-MUX procedure is flexible and straightforward, more control electrodes and complicated controls are needed. In contrast, simplified designs of mode-selective switches were proposed to avoid intricate operations [126][127][128]. The input multiplexed signals can be processed simultaneously and the output signals are both on FMs, which is easy for detection and subsequent processing.…”

Section: Mode-selective Switchesmentioning

confidence: 99%

Silicon chip-scale space-division multiplexing: from devices to system

Sun

Zhang

2018

Sci. China Inf. Sci.

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Space-division multiplexing (SDM) technique has attracted increasing attentions recently, because it provides an effective way to increase transmission capacity. With the continuous and exponential increase in data demands, high-density integration of silicon photonic components is of significant interest in terms of link price, performance and power consumption. The multimode/mutlicore devices applied to achieve diverse functionalities are key building blocks to construct a chip-scale SDM system based on a silicon on insulator (SOI) platform. This study reviews the recent progress of multimode/multicore devices, which enable coupling, multiplexing/demultiplexing, transmitting switching, as well as modulation and detection. Based on these devices, a complete on-chip SDM system is constructed and discussed.

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“…Mode-selective switches (MSSs) and mode-division reconfigurable optical add/drop multiplexers (ROADMs) are key building blocks to construct on-chip MDM networks, which allow each mode channel to be transmitted, rerouted, dropped, or added to perform optical channel processing. Typical MSSs and mode-division ROADMs are realized with combined architectures of passive mode-division (de)multiplexers and space switches [23][24][25][26][27][28][29][30] or cascaded mode-selective ring resonators with bus waveguide taper transitions [31][32][33] that are subject to accumulated optical losses and crosstalks with large footprints owing to the requirement for combining various photonic components. In this paper, we propose a novel scheme for mode-division ROADMs with mode-selective silicon photonic MEMS switches.…”

Section: Introductionmentioning

confidence: 99%

Silicon Photonic Mode-Division Reconfigurable Optical Add/Drop Multiplexers with Mode-Selective Integrated MEMS Switches

2020

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Mode-division multiplexing (MDM) is an attractive solution for future on-chip networks to enhance the optical transmission capacity with a single laser source. A mode-division reconfigurable optical add/drop multiplexer (ROADM) is one of the key components to construct flexible and complex on-chip optical networks for MDM systems. In this paper, we report on a novel scheme of mode-division ROADM with mode-selective silicon photonic MEMS (micro-electromechanical system) switches. With this ROADM device, data carried by any mode-channels can be rerouted or switched at an MDM network node, i.e., any mode could be added/dropped to/from the multimode bus waveguide flexibly and selectively. Particularly, the design and simulation of adiabatic vertical couplers for three quasi-TE modes (TE0, TE1, and TE2 modes) based on effective index analysis and mode overlap calculation method are reported. The calculated insertion losses are less than 0.08 dB, 0.19 dB, and 0.03 dB for the TE0 mode, TE1 mode, and TE2 mode couplers, respectively, over a wavelength range of 75 nm (1515–1590 nm). The crosstalks are below −20 dB over the bandwidth. The proposed device is promising for future on-chip optical networks with flexible functionality and large-scale integration.

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On-chip switch for reconfigurable mode-multiplexing optical network

Cited by 29 publications

References 18 publications

Ultra‐Sharp Multi‐Mode Waveguide Bending Assisted with Metamaterial‐Based Mode Converters

Ultra‐Sharp Multi‐Mode Waveguide Bending Assisted with Metamaterial‐Based Mode Converters

Silicon chip-scale space-division multiplexing: from devices to system

Silicon Photonic Mode-Division Reconfigurable Optical Add/Drop Multiplexers with Mode-Selective Integrated MEMS Switches

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