Silicon two-mode multi/demultiplexer based on tapered couplers

Li, Haiqin; Li, Shiqi; Yang, Tianjun; Xu, Jing; Li, Jun; Chen, Weiwei; Wang, Pengjun; Dai, Tingge; Wang, Gencheng; Yang, Jianyi

doi:10.1016/j.ijleo.2018.09.115

Cited by 3 publications

(4 citation statements)

References 22 publications

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“…The channel volume can be improved significantly by adding dual polarization or several guided modes. It is undoubtedly conceivable to mix several guided modes and dual polarizations in such a manner that many channels can be acquired for a single wavelength carrier 18 . Hybrid PDM-MDM MUX/DEMUX is considered as the main component operating with both dual-polarization and multiple modes 128−131 .…”

Section: Hybrid Pdm-mdm Techniquementioning

confidence: 99%

“…MDM communication has been established with several modes in Si photonic integrated circuits (PICs), in which each mode signified a distinct information channel 14−16 . Numerous constructions, for example, multimode interferometers (MMIs) 17 , asymmetric directional couplers (ADCs) 18 and adiabatic mode-evolution couplers 19 among others, have been introduced as PICs MDMs.…”

Section: Introductionmentioning

confidence: 99%

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Optical multiplexing techniques and their marriage for on-chip and optical fiber communication: a review

Хонина¹,

Kazanskiy²,

Butt³

et al. 2022

OEA

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Herein, an attention-grabbing and up-to-date review related to major multiplexing techniques is presented which includes wavelength division multiplexing (WDM), polarization division multiplexing (PDM), space division multiplexing (SDM), mode division multiplexing (MDM) and orbital angular momentum multiplexing (OAMM). Multiplexing is a mechanism by which multiple signals are combined into a shared channel used to showcase the maximum capacity of the optical links. However, it is critical to develop hybrid multiplexing methods to allow enhanced channel numbers. In this review, we have also included hybrid multiplexing techniques such as WDM-PDM, WDM-MDM and PDM-MDM. It is probable to attain N×M channels by utilizing N wavelengths and M guided-modes by simply utilizing hybrid WDM-MDM (de)multiplexers. To the best of our knowledge, this review paper is one of its kind which has highlighted the most prominent and recent signs of progress in multiplexing techniques in one place.

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Section: Hybrid Pdm-mdm Techniquementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optical multiplexing techniques and their marriage for on-chip and optical fiber communication: a review

Хонина¹,

Kazanskiy²,

Butt³

et al. 2022

OEA

View full text Add to dashboard Cite

show abstract

“…Hybrid multiplexing techniques, such as MDM-WDM [8][9][10] and MDM-PDM [11], have been also realized. MDM communications were demonstrated with multiple modes in silicon photonic integrated circuits, where each mode represented an independent data channel [12][13][14][15][16][17][18][19][20][21][22]. On-chip MDMs have been realized by various structures, such as multimode interferometers (MMIs) [14,15], asymmetric directional couplers (ADCs) [16,17], topology optimized waveguides [18,19], and adiabatic mode-evolution couplers [20][21][22].…”

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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“…It is almost five decades since tapers in optical fibres were identified as a significant topic of research [1]. Tapered fibres are enjoying renewed interest because of useful applications as optical fibre sensors and couplers [2]. Examples of these are evanescent wave biosensors [3][4][5][6], hydrogen detection [7], astro-photonics devices [8,9], fibre optic laser applications Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence.…”

Section: Introductionmentioning

confidence: 99%

Fundamental mode intensity evolution in tapered optical fibres

et al. 2020

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The mode field intensity, spot size, central peak intensity evolution and adiabaticity are calculated for different points along the transition of an optical fibre taper that adiabatically tapers from the standard 125 nm down to 1 µm and then to 440 nm diameter for low loss operation at 1550 nm wavelength. The first section of the taper is evaluated using a weak guidance approximation. The second section is treated as a three-index layer structure (double-clad) and evaluated with eigenvalue equations for three refractive indices. The third and thinnest section of the taper is studied using an exact mode eigenvalue equation. The results show that the fundamental mode for the third section has a discontinuity at the fibre edge with a peak intensity larger than the intensity at the centre of the fibre. Since the guiding by the core disappears in the first section of the taper, the mode field does not simply reduce monotonously along the taper with the outer diameter of the fibre. By this novel approach, and for the first time, to the best of our knowledge, the taper shape that complies with the adiabaticity criterion, the mode intensity profile and the spot size (first Petermann definition) of the fundamental mode evolution, along their position on the taper are determined.

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Silicon two-mode multi/demultiplexer based on tapered couplers

Cited by 3 publications

References 22 publications

Optical multiplexing techniques and their marriage for on-chip and optical fiber communication: a review

Optical multiplexing techniques and their marriage for on-chip and optical fiber communication: a review

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

Fundamental mode intensity evolution in tapered optical fibres

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