scholarly journals Multimode silicon photonics

Nanophotonics ◽  
2018 ◽  
Vol 8 (2) ◽  
pp. 227-247 ◽  
Author(s):  
Chenlei Li ◽  
Dajian Liu ◽  
Daoxin Dai
Keyword(s):  
Integrated Circuits ◽  
Silicon Photonics ◽  
Fundamental Mode ◽  
Optical Filters ◽  
Photonic Devices ◽  
Higher Order ◽  
Multimode Waveguide ◽  
Higher Order Modes ◽  
Silicon Photonic ◽  
On Chip

AbstractMultimode silicon photonics is attracting more and more attention because the introduction of higher-order modes makes it possible to increase the channel number for data transmission in mode-division-multiplexed (MDM) systems as well as improve the flexibility of device designs. On the other hand, the design of multimode silicon photonic devices becomes very different compared with the traditional case with the fundamental mode only. Since not only the fundamental mode but also the higher-order modes are involved, one of the most important things for multimode silicon photonics is the realization of effective mode manipulation, which is not difficult, fortunately because the mode dispersion in multimode silicon optical waveguide is very strong. Great progresses have been achieved on multimode silicon photonics in the past years. In this paper, a review of the recent progresses of the representative multimode silicon photonic devices and circuits is given. The first part reviews multimode silicon photonics for MDM systems, including on-chip multichannel mode (de)multiplexers, multimode waveguide bends, multimode waveguide crossings, reconfigurable multimode silicon photonic integrated circuits, multimode chip-fiber couplers, etc. In the second part, we give a discussion about the higher-order mode-assisted silicon photonic devices, including on-chip polarization-handling devices with higher-order modes, add-drop optical filters based on multimode Bragg gratings, and some emerging applications.

scholarly journals Subwavelength silicon photonics for on-chip mode-manipulation

PhotoniX ◽  
2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Chenlei Li ◽  
Ming Zhang ◽  
Hongnan Xu ◽  
Ying Tan ◽  
Yaocheng Shi ◽  
...  
Keyword(s):  
Silicon Photonics ◽  
High Performance ◽  
Photonic Devices ◽  
Multimode Waveguide ◽  
Plasmonic Waveguides ◽  
Mode Dispersion ◽  
Integrated Devices ◽  
Power Splitters ◽  
On Chip ◽  
Modal Field

AbstractOn-chip mode-manipulation is one of the most important physical fundamentals for many photonic integrated devices and circuits. In the past years, great progresses have been achieved on subwavelength silicon photonics for on-chip mode-manipulation by introducing special subwavelength photonic waveguides. Among them, there are two popular waveguide structures available. One is silicon hybrid plasmonic waveguides (HPWGs) and the other one is silicon subwavelength-structured waveguides (SSWGs). In this paper, we focus on subwavelength silicon photonic devices and the applications with the manipulation of the effective indices, the modal field profiles, the mode dispersion, as well as the birefringence. First, a review is given about subwavelength silicon photonics for the fundamental-mode manipulation, including high-performance polarization-handling devices, efficient mode converters for chip-fiber edge-coupling, and ultra-broadband power splitters. Second, a review is given about subwavelength silicon photonics for the higher-order-mode manipulation, including multimode converters, multimode waveguide bends, and multimode waveguide crossing. Finally, some emerging applications of subwavelength silicon photonics for on-chip mode-manipulation are discussed.

Silicon photonic devices and integrated circuits

Nanophotonics ◽  
2014 ◽  
Vol 3 (4-5) ◽  
pp. 215-228 ◽  
Author(s):  
Po Dong ◽  
Young-Kai Chen ◽  
Guang-Hua Duan ◽  
David T. Neilson
Keyword(s):  
Silicon Nitride ◽  
Integrated Circuits ◽  
Silicon Photonics ◽  
High Performance ◽  
Photonic Devices ◽  
Full Potential ◽  
Modulation Formats ◽  
Photonic Circuits ◽  
Optimal Position ◽  
Silicon Photonic

AbstractSilicon photonic devices and integrated circuits have undergone rapid and significant progresses during the last decade, transitioning from research topics in universities to product development in corporations. Silicon photonics is anticipated to be a disruptive optical technology for data communications, with applications such as intra-chip interconnects, short-reach communications in datacenters and supercomputers, and long-haul optical transmissions. Bell Labs, as the research organization of Alcatel-Lucent, a network system vendor, has an optimal position to identify the full potential of silicon photonics both in the applications and in its technical merits. Additionally it has demonstrated novel and improved high-performance optical devices, and implemented multi-function photonic integrated circuits to fulfill various communication applications. In this paper, we review our silicon photonic programs and main achievements during recent years. For devices, we review high-performance single-drive push-pull silicon Mach-Zehnder modulators, hybrid silicon/III-V lasers and silicon nitride-assisted polarization rotators. For photonic circuits, we review silicon/silicon nitride integration platforms to implement wavelength-division multiplexing receivers and transmitters. In addition, we show silicon photonic circuits are well suited for dual-polarization optical coherent transmitters and receivers, geared for advanced modulation formats. We also discuss various applications in the field of communication which may benefit from implementation in silicon photonics.

scholarly journals High-Performance On-Chip Silicon Beamsplitter Based on Subwavelength Metamaterials for Enhanced Fabrication Tolerance

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1304
Author(s):  
Raquel Fernández de Cabo ◽  
David González-Andrade ◽  
Pavel Cheben ◽  
Aitor V. Velasco
Keyword(s):  
Integrated Circuits ◽  
Fundamental Mode ◽  
High Performance ◽  
Three Dimensional ◽  
High Sensitivity ◽  
Power Splitting ◽  
Excess Loss ◽  
Power Splitters ◽  
On Chip ◽  
Efficient Power

Efficient power splitting is a fundamental functionality in silicon photonic integrated circuits, but state-of-the-art power-division architectures are hampered by limited operational bandwidth, high sensitivity to fabrication errors or large footprints. In particular, traditional Y-junction power splitters suffer from fundamental mode losses due to limited fabrication resolution near the junction tip. In order to circumvent this limitation, we propose a new type of high-performance Y-junction power splitter that incorporates subwavelength metamaterials. Full three-dimensional simulations show a fundamental mode excess loss below 0.1 dB in an ultra-broad bandwidth of 300 nm (1400–1700 nm) when optimized for a fabrication resolution of 50 nm, and under 0.3 dB in a 350 nm extended bandwidth (1350–1700 nm) for a 100 nm resolution. Moreover, analysis of fabrication tolerances shows robust operation for the fundamental mode to etching errors up to ± 20 nm. A proof-of-concept device provides an initial validation of its operation principle, showing experimental excess losses lower than 0.2 dB in a 195 nm bandwidth for the best-case resolution scenario (i.e., 50 nm).

Nonlinear behaviour of contained inertia waves

1996 ◽  
Vol 315 ◽  
pp. 151-173 ◽  
Author(s):  
Richard Manasseh
Keyword(s):  
Fundamental Mode ◽  
Experimental Studies ◽  
Higher Order ◽  
Time Dependent ◽  
Linear Wave ◽  
Wave System ◽  
Nonlinear Behaviour ◽  
Rotating Fluid ◽  
Weakly Nonlinear ◽  
Higher Order Modes

Rotating fluid-filled containers are systems which admit inertial oscillations, which at appropriate frequencies can be represented as inertia wave modes. When forced by a time-dependent perturbation, systems of contained inertia waves have been shown, in a number of experimental studies, to exhibit complex and varied breakdown phenomena. It is particularly hard to determine a forcing amplitude below which breakdowns do not occur but at which linear wave behaviour is still measurable. In this paper, experiments are presented where modes of higher order than the fundamental are forced. These modes exhibit more complex departures from linear inviscid behaviour than the fundamental mode. However, the experiments on higher-order modes show that instabilities begin at nodal planes. It is shown that even a weakly nonlinear contained inertia-wave system is one in which unexpectedly efficient interactions with higher-order modes can occur, leading to ubiquitous breakdowns. An experiment with the fundamental mode illustrates the system's preference for complex transitions to chaos.

scholarly journals Nanowires Integrated to Optical Waveguides

2021 ◽  
Author(s):  
Ricardo Téllez-Limón ◽  
Rafael Salas-Montiel
Keyword(s):  
Optical Waveguides ◽  
Optical Filters ◽  
Photonic Devices ◽  
Light Sources ◽  
Dielectric Waveguides ◽  
Metallic Nanowires ◽  
Research Subjects ◽  
Periodic Arrays ◽  
On Chip ◽  
Physical Phenomena

Chip-scale integrated optical devices are one of the most developed research subjects in last years. These devices serve as a bridge to overcome size mismatch between diffraction-limited bulk optics and nanoscale photonic devices. They have been employed to develop many on-chip applications, such as integrated light sources, polarizers, optical filters, and even biosensing devices. Among these integrated systems can be found the so-called hybrid photonic-plasmonic devices, structures that integrate plasmonic metamaterials on top of optical waveguides, leading to outstanding physical phenomena. In this contribution, we present a comprehensive study of the design of hybrid photonic-plasmonic systems consisting of periodic arrays of metallic nanowires integrated on top of dielectric waveguides. Based on numerical simulations, we explain the physics of these structures and analyze light coupling between plasmonic resonances in the nanowires and the photonic modes of the waveguides below them. With this chapter we pretend to attract the interest of research community in the development of integrated hybrid photonic-plasmonic devices, especially light interaction between guided photonic modes and plasmonic resonances in metallic nanowires.

scholarly journals State-of-the-Art and Perspectives on Silicon Waveguide Crossings: A Review

Micromachines ◽  
2020 ◽  
Vol 11 (3) ◽  
pp. 326 ◽  
Author(s):  
Sailong Wu ◽  
Xin Mu ◽  
Lirong Cheng ◽  
Simei Mao ◽  
H.Y. Fu
Keyword(s):  
Integrated Circuits ◽  
State Of The Art ◽  
Design Method ◽  
Photonic Devices ◽  
Research Directions ◽  
Subwavelength Grating ◽  
Silicon Waveguide ◽  
Mode Division Multiplexing ◽  
Silicon Photonic ◽  
Inverse Design Method

In the past few decades, silicon photonics has witnessed a ramp-up of investment in both research and industry. As a basic building block, silicon waveguide crossing is inevitable for dense silicon photonic integrated circuits and efficient crossing designs will greatly improve the performance of photonic devices with multiple crossings. In this paper, we focus on the state-of-the-art and perspectives on silicon waveguide crossings. It reviews several classical structures in silicon waveguide crossing design, such as shaped taper, multimode interference, subwavelength grating, holey subwavelength grating and vertical directional coupler by forward or inverse design method. In addition, we introduce some emerging research directions in crossing design including polarization-division-multiplexing and mode-division-multiplexing technologies.

An on-chip integrated microfiber–silicon–graphene hybrid structure photodetector

Laser Physics ◽  
2021 ◽  
Vol 31 (12) ◽  
pp. 126207
Author(s):  
Fangjie Wang ◽  
Xiaoxu Chen ◽  
Sikun Zhou ◽  
Qiongqiong Gu ◽  
Hao Zhou ◽  
...  
Keyword(s):  
Rise Time ◽  
Reverse Bias ◽  
Near Infrared ◽  
Hybrid Structure ◽  
Photonic Devices ◽  
Silicon Photonic ◽  
On Chip ◽  
Silicon Based

Abstract Silicon photonic devices have great potential for photocommunication, and silicon-based photodetectors have attracted wide attention. Here, we report an on-chip integrated microfiber–silicon–graphene hybrid structure photodetector that can operate in the visible and near-infrared ranges. The detector has a responsivity of ∼136 mA W−1 at 808 nm and a rise time of ∼1.1 μs. At a reverse bias of 5 V, we achieved a responsivity of ∼1350 mA W−1. Our device provides an option for on-chip integration.

Heterogeneous integration of silicon photonic devices and integrated circuits

2015 ◽  
Author(s):  
Hyundai Park ◽  
Brian R. Koch ◽  
Erik J. Norberg ◽  
Jonathon E. Roth ◽  
Byungchae Kim ◽  
...  
Keyword(s):  
Integrated Circuits ◽  
Photonic Devices ◽  
Heterogeneous Integration ◽  
Silicon Photonic

Multimode T-junctions based on truncated Eaton lens

Frequenz ◽  
2020 ◽  
Vol 74 (7-8) ◽  
pp. 271-276
Author(s):  
Seyed Hadi Badri ◽  
Mohsen Mohammadzadeh Gilarlue
Keyword(s):  
Optical Interconnects ◽  
Three Dimensional ◽  
Emerging Technology ◽  
Higher Order ◽  
Silicon On Insulator ◽  
Transmitted Power ◽  
Mode Division Multiplexing ◽  
Higher Order Modes ◽  
On Chip ◽  
Three Dimensional Simulations

AbstractMode-division multiplexing (MDM) in silicon-on-insulator platform is an emerging technology to increase the channel number of a single wavelength carrier by the number of modes and consequently increase the transmission capacity of on-chip optical interconnects. We propose and theoretically demonstrate a multimode branching structure based on the truncated Eaton lens. The proposed T-junctions efficiently convert the higher-order modes into fundamental modes; therefore, they can be potentially employed to manipulate modes in MDM systems. The designed T-junctions are implemented by varying the guiding layer’s thickness on a silicon-on-insulator platform. The three-dimensional simulations verify that the proposed structures can split the TE2 (TE1) mode into the fundamental modes with an average transmitted power of 32% (47%) in a 1550–1600 nm bandwidth.

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