A Design Guideline for Mode (DE) Multiplexer Based on Integrated Tapered Asymmetric Directional Coupler

Shu, Haowen; Shen, Bitao; Deng, Qingzhong; Jin, Ming; Zhou, Zhen

doi:10.1109/jphot.2019.2941742

Cited by 32 publications

(8 citation statements)

References 19 publications

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“…Similarly, when the TE k mode is input from Port III of this multimode switching element, finally restored to the TE k mode and output from Port IV, the insertion loss generated by this process can be established as Equation (20). For TE 0 mode, when it is input from Port I, Port III, Port II, and Port IV of the multimode switching element, the corresponding output port is Port III, Port I, Port IV, and Port II, respectively; the insertion loss can be calculated using Equation (19). Moreover, when the TE 0 mode is input from the Port I and the corresponding output from the Port IV, the corresponding insertion loss can be obtained by Equation (21).…”

Section: Methodsmentioning

confidence: 99%

“…Therefore, the mode division multiplexing technology is considered to be a very promising technology, which can provide scalable bandwidth growth for data centers to meet future network requirements. In recent years, many optical devices for mode multiplexing have been studied, such as mode (de)multiplexers [16][17][18][19][20], multimode bendings [21,22], multimode waveguide crossings [22][23][24], multimode switches [25][26][27], and mode filters [28,29].…”

Section: Introductionmentioning

confidence: 99%

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An N-Port Universal Multimode Optical Router Supporting Mode-Division Multiplexing

Yang

Liu

et al. 2021

Micromachines

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Optical network-on-chip (ONoC) is based on optical interconnects and optical routers (ORs), which have obvious advantages in bandwidth and power consumption. Transmission capacity is a significant performance in ONoC architecture, which has to be fully considered during the design process. Relying on mode-division multiplexing (MDM) technology, the system capacity of optical interconnection is greatly improved compared to the traditional multiplexing technology. With the explosion in MDM technology, the optical router supporting MDM came into being. In this paper, we design a multimode optical router (MDM-OR) model and analyze its indicators. Above all, we propose a novel multimode switching element and design an N-port universal multimode optical router (MDM-OR) model. Secondly, we analyze the insertion loss model of different optical devices and the crosstalk noise model of N-port MDM-OR. On this basis, a multimode router structure of a single-mode five-port optical router is proposed. At the same time, we analyze the transmission loss, crosstalk noise, signal-to-noise radio (OSNR), and bit error rate (BER) of different input–output pairs by inputting the 1550 nm TE0, TE1, and TE2 modes to the router.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An N-Port Universal Multimode Optical Router Supporting Mode-Division Multiplexing

Yang

Liu

et al. 2021

Micromachines

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“…Mode division multiplexing (MDM) technology has attracted widespread attention by offering a new dimension to increase the data capacity using spatial modes of the waveguide using a single wavelength carrier [2]. Various SiPh devices have been developed to extend the capacity for MDM networks, such as mode multiplexer/de-multiplexer [3], switchable mode exchanger [4], multimode optical switches [5][6][7][8][9][10][11][12], power splitter [13], and more. Among them, multimode optical switch is a key component to route the multimode signals for MDM networks.…”

Section: Introductionmentioning

confidence: 99%

Scalable Two-Mode 3-Port and 4-Port Mode Insensitive Silicon Photonic Switches

Das

Zhang

Mojaver

et al. 2021

IEEE Photon. Technol. Lett.

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We propose and experimentally demonstrate a novel design approach for scalable 3-port and 4-port mode insensitive multimode switching matrices for the first two quasi-transverse electric (TE) modes. The mode insensitive phase shifter ensures less power consumption for simultaneous multimode signal transmission in a mode division multiplexing (MDM) network. At 1550 nm, the 3-port switch exhibits approximately 2.6 dB and 3.3 dB insertion loss for the longest path with a crosstalk of at most 10 dB and 8 dB over a bandwidth of 40 nm (1530 nm to 1570 nm) for modes, respectively. The insertion loss measured for the 4-port switch is approximately 2.7 dB and 3.6 dB at 1550 nm with a corresponding crosstalk less than 8 dB for the two TE modes, respectively. The payload transmission is also performed using both 10 Gb/s non-return-to-zero (NRZ) and 14.0625 Gbaud 4-level pulse-amplitude modulation (PAM4) pseudorandom binary sequence (PRBS)-31 data signal to analyze the performance of the switches. Clear open eyes are observed for both single-mode and simultaneous two-mode transmissions. The low insertion loss, low intermodal crosstalk over a large optical bandwidth, and the clear open eye validate the scalability of the proposed switches for larger port count and higher-order modes.

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“…Besides, the bandwidth is limited and the fabrication tolerance is also tight. To relax the phase-matching condition, several performance-enhanced ADC structures have been proposed, including the grating assisted coupler [11], coupled vertical gratings [12], tapered ADC [13], and subwavelength grating (SWG) based ADC [14]. Among these, the SWG-based ADC could form an ultra-broadband mode and Telecommunications, Nanjing…”

Section: Introductionmentioning

confidence: 99%

Broadband Silicon Four-Mode (De)Multiplexer Using Subwavelength Grating-Assisted Triple-Waveguide Couplers

Jiang

Mao

et al. 2021

J. Lightwave Technol.

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A broadband silicon four-mode (de)multiplexer [(De)MUX] is proposed and experimentally demonstrated based on subwavelength gratings (SWGs)-assisted triple-waveguide couplers (TWCs), which can (de)multiplex TE0, TE1, TE2, and TE3 modes. The mode interaction is enhanced, benefitting from both the triple-waveguide coupling and subwavelength structures. The proposed four-mode (De)MUX is composed of three SWG-assisted TWCs connected by three linear tapers. The experimental results show that the 3-dB bandwidths are 100 nm, 76 nm, 90 nm, and 95 nm for the TE0, TE1, TE2, and TE3 modes, respectively. The corresponding insertion losses are 0.2, 1.8, 1.3, and 1.7 dB, and the mode crosstalks are -23.3, -17.7, -15.5, and -17.0 dB at the 1550 nm wavelength. The proposed device can work as a mode-(De)MUX compatible with wavelength division multiplexing (WDM) to increase the transmission capacity of on-chip optical interconnects.

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A Design Guideline for Mode (DE) Multiplexer Based on Integrated Tapered Asymmetric Directional Coupler

Cited by 32 publications

References 19 publications

An N-Port Universal Multimode Optical Router Supporting Mode-Division Multiplexing

An N-Port Universal Multimode Optical Router Supporting Mode-Division Multiplexing

Scalable Two-Mode 3-Port and 4-Port Mode Insensitive Silicon Photonic Switches

Broadband Silicon Four-Mode (De)Multiplexer Using Subwavelength Grating-Assisted Triple-Waveguide Couplers

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