4 × 4 nonblocking optical switch fabric based on cascaded multimode interferometers

Li, Zuxiang; Zhou, Linjie; Lu, Liangjun; Zhao, Shuoyi; Li, Dong; Chen, Jianping

doi:10.1364/prj.4.000021

Cited by 18 publications

(5 citation statements)

References 19 publications

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“…The proposed and demonstrated mesh-structure-enabled programmable multitask silicon chip shows similar performance compared to the state-of-the-art single-function silicon chip (MZI, optical delay line, 60 multiport router, 61 N × N optical switch 62 ) in terms of loss, ER, crosstalk, BER, and OSNR penalty. For the microring resonator, 29 although the mesh-structure silicon chip and conventional single-function silicon microring resonator show different performance parameters, they both can find their useful applications.…”

Section: ■ Discussionmentioning

confidence: 88%

Mesh-Structure-Enabled Programmable Multitask Photonic Signal Processor on a Silicon Chip

et al. 2020

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Photonic integrated circuits (PICs) have recently attracted extensive attention in advanced photonic signal processing to meet the ever-increasing demands on high-speed and ultracompact data signal management. However, programmable and multitask photonic signal processing is still full of challenges, especially the scalable photonic integration solution. Here, we design, fabricate, and demonstrate a mesh-structure-enabled programmable multitask photonic signal processor on a silicon chip. It relies on a scalable 2D mesh structure network with a number of hexagonal unit cells formed by building blocks of tunable Mach–Zehnder interferometers (MZIs). We study several simple and complex optical filtering functions using configured single ring resonator, cascaded ring resonators, ring-assisted MZI, cascaded MZIs, reconfigurable and tunable comb filter and (de)interleaver, and double-injection ring resonators. For the proof-of-concept demonstration of on-chip programmable multitask photonic signal processing, a monolithically integrated silicon chip with four hexagonal unit cells is fabricated with greatly reduced geometric dimension. By appropriately adjusting the thermo-optic phase shifters of MZIs, versatile programmable multitask photonic signal processing functions are demonstrated in the experiment with impressive performance, including single ring resonator, cascaded ring resonators, asymmetric MZI, ring-assisted MZI, optical delay line, multiport router, and N × N optical switch. In particular, we also demonstrate the optical interference unit (OIU)-enabled self-configurable router and switch and their practical applications in fiber-optic communication systems. The demonstrations may open up new perspectives for on-chip solutions to ultracompact, reconfigurable, programmable, and multifunctional data signal management in advanced optical communication networks.

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Section: ■ Discussionmentioning

confidence: 88%

Mesh-Structure-Enabled Programmable Multitask Photonic Signal Processor on a Silicon Chip

et al. 2020

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“…As to problem 1, ultrafast time slice switching can be realized by optical switches in space. Nowadays certain optical switches are already able to reach a switching time of several microseconds even nanoseconds [14], [15], while magneto-optical switches have already been utilized in space, guaranteeing optical switches to be a maturing technique in optical satellite networks. An all-optical FSO link with optical switches as been experimental validated in [16], which also proves the maturity of optical switches in FSO communication.…”

Section: Challenges Of Otss On Satellitementioning

confidence: 99%

Time-Sliced Flexible Resource Allocation for Optical Low Earth Orbit Satellite Networks

et al. 2019

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In future optical satellite networks with various service requirements, the bandwidth of a single traffic request occupies part of an inter-satellite link (ISL) channel capacity, thus leading to a greater demand for flexible resource allocation. The switching scheme is the most important determinant for flexible resource allocation in optical satellite networks, whereas the widely used optical switching techniques, including wavelength switching (WS) and electronic packet switching (EPS), have their own drawbacks such as bandwidth underutilization and high power consumption. In this paper, we utilize optical time slice switching (OTSS) to provide enormous transparent fine-grained connections for various traffic requests. To implement OTSS into low earth orbit (LEO) satellite networks, where the lengths of inter-orbit ISLs vary along time, we propose a distance-varying routing and time slice allocation (DV-RTSA) scheme. The simulation results demonstrate that the OTSS-based DV-RTSA scheme not only utilizes less active transponders when compared with the traditional schemes, but also achieves a significant throughput increase over the WS-based scheme and reaches the level of the EPS-based scheme exempting from its defects.INDEX TERMS Distance-varying routing and time-slice resource allocation (DV-RTSA), electronic packet switching (EPS), low earth orbit (LEO) satellite networks, optical time slice switching (OTSS), wavelength switching (WS).

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“…To realize a complete and flexible MDM optical network, the switching and routing for different data channels are indispensable functionalities. It is promising to enable data routing between processor and memory for future on-chip multiprocessors systems [7][8][9][10][11][12][13]. Up to now, only a few switching schemes have been proposed for MDM networks.…”

Section: Introductionmentioning

confidence: 99%

On-chip switch for reconfigurable mode-multiplexing optical network

Sun

Chen

et al. 2016

Opt. Express

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The switching and routing is essential for an advanced and reconfigurable optical network, and great efforts have been done for traditional single-mode system. We propose and demonstrate an on-chip switch compatible with mode-division multiplexing system. By controlling the induced phase difference, the functionalities of dynamically routing data channels can be achieved. The proposed switch is experimentally demonstrated with low insertion loss of ~1 dB and high extinction ratio of ~20 dB over the C-band for OFF-ON switchover. For further demonstration, the non-return-to-zero on-off keying signals at 10 Gb/s carried on the two spatial modes are successfully processed. Open and clear eye diagrams can be observed and the bit error rate measurements indicate a good data routing performance.

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4 × 4 nonblocking optical switch fabric based on cascaded multimode interferometers

Cited by 18 publications

References 19 publications

Mesh-Structure-Enabled Programmable Multitask Photonic Signal Processor on a Silicon Chip

Mesh-Structure-Enabled Programmable Multitask Photonic Signal Processor on a Silicon Chip

Time-Sliced Flexible Resource Allocation for Optical Low Earth Orbit Satellite Networks

On-chip switch for reconfigurable mode-multiplexing optical network

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