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

Yu, Yu; Sun, Chunlei; Zhang, Chi

doi:10.1007/s11432-017-9449-4

Cited by 23 publications

(9 citation statements)

References 158 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The coupling between the high-order modes of the silicon bus-waveguide and few-mode fibre (FMF) is very challenging. Recently, several approaches have been reported to achieve the multimode fibre-chip coupling, including the vertical and edge coupling mechanisms 5,30 . For the multimode vertical-coupling, the high-order modes of an FMF can be excited by using the 2D grating couplers based mode exciter and phase shifters 31,32 .…”

Section: Resultsmentioning

confidence: 99%

“…Recently, silicon photonics based polarisation and mode (De)MUXs have been extensively reported for on-chip PDM and MDM sub-systems, respectively, which can yield ultra-compact, CMOS-compatible, and low-cost components 4,5 . Two approaches, mode evolution and mode coupling have been proposed to realise both the polarisation and mode (De)MUXs 6,7 .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Compact silicon 10-mode multi/demultiplexer for hybrid mode- and polarisation-division multiplexing system

Jiang

Miao

2019

Sci Rep

View full text Add to dashboard Cite

To further increase the capacity of the optical transmission system, the hybrid mode- and polarisation-division multiplexing (MDM-PDM) technology has been proved to be an efficient approach by multiplexing dual polarisations for each orthogonal eigen mode. A hybrid (de)multiplexer [(De)MUX] is one of the most important fabrics for the hybrid MDM-PDM networks. A compact silicon 10-mode hybrid (De)MUX is proposed based on three cascaded asymmetric directional couplers (ADCs) based sections, three adiabatic tapers, and a polarisation beam splitter (PBS). The phase-matching conditions can be achieved by varying the widths of the bus waveguides for the TM modes and then by varying the widths of the access waveguides for the TE modes. The simulated results show that a compact total coupling length for TM1 ~ TM3 and TE1 ~ TE5 modes can be achieved to be 55.4 μm. In addition, the total loss of the proposed hybrid (De)MUX can be reduced benefitting from the fewer tapers compared with the conventional cascaded ADCs. The PBS is also optimised with a compact length of 7.0 μm and high extinction ratios of 32.9 dB and 15.4 dB for the TM0 and TE0 modes, respectively.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Compact silicon 10-mode multi/demultiplexer for hybrid mode- and polarisation-division multiplexing system

Jiang

Miao

2019

Sci Rep

View full text Add to dashboard Cite

show abstract

“…To cope with the ever-growing shortage of communication resources, advanced multiplexing technologies such as wavelength-division multiplexing (WDM) 1 and polarization-division multiplexing (PDM), have been developed to realize multi-channel parallel data transmissions. In the past decades, mode-division multiplexing (MDM) technology has attracted considerable attention 2,3,4 , which divides mutually orthogonal mode channels in a single wavelength. Various kinds of mul-timode manipulating and processing devices have been springing up, such as mode multiplexers/demultiplexers 5,6 , mode converters [7][8][9] , and mode switches 10 .…”

Section: Introductionmentioning

confidence: 99%

Towards integrated mode-division demultiplexing spectrometer by deep learning

Zheng¹,

Zhu²,

Chen³

et al. 2022

OES

View full text Add to dashboard Cite

Miniaturized spectrometers have been widely researched in recent years, but few studies are conducted with on-chip multimode schemes for mode-division multiplexing (MDM) systems. Here we propose an ultracompact mode-division demultiplexing spectrometer that includes branched waveguide structures and graphene-based photodetectors, which realizes simultaneously spectral dispersing and light fields detecting. In the bandwidth of 1500-1600 nm, the designed spectrometer achieves the single-mode spectral resolution of 7 nm for each mode of TE 1 -TE 4 by Tikhonov regularization optimization. Empowered by deep learning algorithms, the 15-nm resolution of parallel reconstruction for TE 1 -TE 4 is achieved by a single-shot measurement. Moreover, by stacking the multimode response in TE 1 -TE 4 to the single spectra, the 3-nm spectral resolution is realized. This design reveals an effective solution for on-chip MDM spectroscopy, and may find applications in multimode sensing, interconnecting and processing.

show abstract

“…MDM technique can be made more feasible by filtering out the undesired modes using a mode filter in a similar way the wavelength filter is used in wavelength-division multiplexing systems (WDM) [ 14 ]. As the lower order modes are difficult to filter out from the fiber/waveguide for their good confinement capability, the mode filter has become an essential device in the MDM system.…”

Section: Introductionmentioning

confidence: 99%