最新研究
Reconfigurable Narrowband Optical Filter on Thin-Film Lithium Tantalate
期刊: IEEE Photonics Technology Letters
Narrowband optical filters with flexible tunability are key components for integrated reconfigurable wavelength division multiplexing and microwave photonic systems to cope with diverse signals and in...
Ultralow-Power Tuning and Nonvolatile Operation on a Hybrid Silicon Nitride Barium Titanate Integrated Photonics Platform
期刊: ACS Nano
The information era imposes increasing demands on speed and energy efficiency, pushing conventional electronics to its physical limits. Silicon photonics offers a promising path forward, particularly ...
High-bandwidth electro-optic modulator on hybrid silicon nitride lithium tantalate platform
期刊: Optics Letters
Integrated electro-optic modulators are key components in modern communication networks and various applications, with lithium tantalate currently being one of the most promising crystalline thin-film...
Unlocking High-Speed and Energy-Efficiency: Integrated Convolution Processing on Thin-Film Lithium Niobate
期刊: Laser & Photonics Reviews
Optical neural networks (ONNs) have emerged as high-performance neural network accelerators, owing to its broad bandwidth and low power consumption. However, most current ONN architectures still strug...
Integrated electro-optic modulator on lead zirconate titanate-silicon nitride heterogeneous platform
期刊: Optics Letters
Integrated electro-optic (EO) modulators are the core components of optoelectronic information technology, and lithium niobate is currently the most widely used crystalline thin film material, however...
Integrated Pockels modulators on silicon photonics platform
期刊: APR
Electro-optic (EO) modulators are essential components in various fields, including optical communication, free-space communication, microwave photonics, sensing, and light detection and ranging. The ...
Hybrid silicon-barium-titanate tunable racetrack resonators based on chemical solution deposition
期刊: APN
Integrated electro-optic tuning devices are essential parts of optical communication, sensor, and optical machine learning. Among the available materials, silicon is the most promising for on-chip sig...
Highly Efficient Slow-Light Mach–Zehnder Modulator Achieving 0.21 V cm Efficiency with Bandwidth Surpassing 110 GHz
期刊: Laser & Photonics Reviews
High-speed electro-optic modulators are key components in modern communication networks and various applications that require chip-scale modulation with large bandwidth, high modulation efficiency, an...
What can be integrated on the siliconphotonics platform and how?
期刊: APL Photonics
We review the integration techniques for incorporating various materials into silicon-based devices. We discuss on-chip light sources with gain materials, linear electro-optic modulators using electro...
On-Chip Topological Photonic Crystal Nanobeam Filters
期刊: Nano Letters
We present an on-chip filter with a broad tailorable working wavelength and a single-mode operation. This is realized through the application of topological photonic crystal nanobeam filters employing...
Ultra-low-power Tunable Topological Photonic Filter on Hybrid Integrated Lithium Tantalite and Silicon Platform
期刊: Laser & Photonics Reviews
Integrated tunable optical filters are essential components in photonic signal processors, telecom systems, sensors, and quantum optical devices. Two of the most important features of a tunable filter...
Hybrid lithium tantalite-silicon integrated photonics platform for electro-optic modulation
期刊: Optics Letters
Integrated electro-optic modulators are key components in photonic integrated circuits. Silicon photonic technology is considered to be promising for large-scale and low-cost integration. However, sil...
High-speed electro-optic modulation in topological interface states of a one-dimensional lattice
期刊: Light: Sicence & Applications
Electro-optic modulators are key components in data communication, microwave photonics, and quantum photonics. Modulation bandwidth, energy efficiency, and device dimension are crucial metrics of modu...
Compact silicon waveguide mode converter employing dielectric metasurface structure
期刊: Advanced Optical Materials
Mode converters are key components in on-chip mode-division multiplexing systems. A compact silicon waveguide mode converter is proposed and demonstrated using all-dielectric metasurface structure wit...
A Hybrid Lithium Tantalite-Silicon Photonics Platform for Electro-Optic Tuning
会议: OECC
High-efficiency and ultralow-power electro-optic tuning devices are key components in photonic integrated circuits. Silicon photonic technology is considered to be promising for large-scale and low-co...
Ultralow‐Power Piezo‐Optomechanically Tuning on CMOS‐Compatible Integrated Silicon‐Hafnium‐Oxide Platform
期刊: Laser & Photonics Reviews
Power consumption of photonic integrated circuits becomes a critical consideration. A new platform is proposed for ultralow-power tuning in silicon photonics via piezo-optomechanical coupling using ha...
Hybrid aluminum nitride and silicon devices for integrated photonics
期刊: Optics Letters
A Luneburg lens with a gradient index distribution is an aberration-free and coma-free spherical lens. It has wide applications ranging from invisibility cloaks, illusion optics, and superlensing. How...
Ultra-broadband on-chip beam focusing enabled by GRIN metalens on silicon-on-insulator platform
期刊: Nanophotonics
Metalens has emerged as an important optical block in free-space optical systems, which shows excellent performance. Even the metalens based on gradient index (GRIN) profiles can be implemented for on...
Record high-order mode-division-multiplexed transmission on chip using gradient-duty-cycle subwavelength gratings
会议: OFC
We demonstrate 16-channel mode (de)multiplexers on a silicon chip using gradientduty-cycle subwavelength gratings. A 1.51-Tbit/s/polarization/wavelength capacity is achieved at 1550 nm with 7 neighbor...
Silicon-integrated high-speed mode and polarization switch-and-selector
期刊: Journal of Semiconductors
On-chip optical communications are growingly aiming at multimode operation together with mode-division multiplexing to further increase the transmission capacity. Optical switches, which are capable o...
Ultra-broadband Mode Size Converter Using On-chip Metamaterial-based Luneburg Lens
期刊: ACS Photonics
A Luneburg lens with a gradient index distribution is an aberration-free and coma-free spherical lens. It has wide applications ranging from invisibility cloaks, illusion optics, and superlensing. How...
Architecture and Devices for Silicon Photonic Switching in Wavelength, Polarization and Mode
期刊: IEEE/OSA J. Lightw. Technol
Switching can be performed with multiple physical dimensions of an optical signal. Previously optical switching was mainly focused in the wavelength domain. In this paper we discuss the general archit...
Silicon Polarization Splitter and Rotator with Tolerance to Width Variations Using a Nonlinearly-tapered and Partially-etched Directional Coupler
会议: OFC
A silicon polarization splitter and rotator is experimentally demonstrated using a nonlinearly-tapered directional coupler. Adiabatic polarization splitting and rotating are achieved over a length of ...
On-chip silicon mode blocking filter employing subwavelength-grating based contra-directional coupler
期刊: Optics Express
Mode blocking may be required in mode-division multiplexing (MDM) systems. We demonstrate a silicon mode blocking filter using a subwavelength grating-based contra-directional coupler. The device is c...
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Silicon High-Order Mode (De)Multiplexer on Single Polarization
期刊: IEEE/OSA J. Lightw. Technol.
Mode-division multiplexing on an integrated photonic chip is critical for future optical networks. High-order mode multiplexing is desired to increase the transmission capacity. Here, we propose and e...
Integrated Multi-Channel Millimeter Wave Photonic Generation Based on A Silicon Chip with Automated Polarization Control
会议: ECOC
We propose and experimentally demonstrate multi-channel millimeter wave (MMW) generation on a silicon chip. Automated polarization-control function is demonstrated, and 5 channels of 28-GHz MMW carryi...
Single-resonance silicon nanobeam filter with an ultra-high thermo-optic tuning efficiency over a wide continuous tuning range
期刊: Optics Letters
Energy-efficient tunability is highly desired for silicon photonic devices. We demonstrate a thermo-optic tunable filter with an ultra-high tuning efficiency based on a suspended photonic crystal nano...
On-chip silicon polarization and mode handling devices
期刊: Frontiers of Optoelectronics
Mode- and polarization-division multiplexing are new promising options to increase the transmission capacity of optical communications. On-chip silicon polarization and mode handling devices are key c...
Ultra-compact Silicon Polarization Beam Splitter with a Short Coupling Length of 0.768 μm
会议: OFC
We demonstrate an ultra-compact silicon polarization beam splitter with a coupling length of 0.768 μm. Lower than 2-dB insertion losses and over 10-dB extinction ratios are achieved over a wavelength ...
On-chip silicon photonic 2 × 2 mode- and polarization- selective switch with low inter-modal crosstalk
期刊: Photonics Research
Mode- and polarization-division multiplexing offer new dimensions to increase the transmission capacity of optical communications. Selective switches are key components in reconfigurable optical netwo...
Silicon photonic bandpass filter based on apodized subwavelength grating with high suppression ratio and short coupling length
期刊: Optics Express
A compact silicon bandpass filter with high sidelobe suppression is proposed and experimentally demonstrated using an apodized subwavelength grating (SWG) coupler. The device is implemented by placing...
Silicon 1 × 2 Mode- and Polarization-selective Switch
会议: OFCC
We experimentally demonstrate an on-chip silicon 1×2 switch that routes 8 data channels on 4 modes and 2 polarizations. The insertion losses are < 8dB, and the crosstalk values are below -15dB. The 8 ...
Ultra-compact and highly efficient silicon polarization splitter and rotator
期刊: APL Photonics
We propose and experimentally demonstrate an ultra-compact and highly efficientpolarizationsplitter and rotator based on asiliconbent directional coupler structure. The TM-to-TE cross-polarization cou...
Ultra-compact and Highly Efficient Polarization Splitter and Rotator Based on a Silicon Bent Directional Coupler
会议: ECOC
An ultra-compact (coupling length ~ 8.77 micrometer) silicon polarization splitter and rotator is demonstrated based on a bent directional coupler. The peak TM-TE coupling efficiency reaches 96.6%. Th...
Ultra-compact broadband silicon polarization beam splitter based on a bridged bent directional coupler
会议: GFP
An ultra-compact (coupling length ∼ 6.28 μm) broadband polarization splitter is experimentally demonstrated based on a silicon bridged bent directional coupler. The polarization extinction ratios are ...
High-extinction-ratio and fabrication-tolerant polarization beam splitter based on grating-assisted contradirectional couplers
会议: OFC
A fabrication-tolerant polarization beam splitter (PBS) based on grating-assisted contradirectional couplers is experimentally demonstrated. Over 30-dB extinction ratios are achieved for both polariza...
Operation Bandwidth Optimization of Photonic Differentiators
期刊: Optics Express
We theoretically investigate the operation bandwidth limitation of the photonic differentiator including the upper limitation, which is restrained by the device operation bandwidth and the lower limit...
High-extinction-ratio silicon polarization beam splitter with tolerance to waveguide width and coupling length variations
期刊: Optics Express
We demonstrate a compact silicon polarization beam splitter (PBS) based on grating-assisted contradirectional couplers (GACCs). Over 30-dB extinction ratios and less than 1-dB insertion losses are ach...
Slow-Light Dispersion in One-Dimensional Photonic Crystal Racetrack Ring Resonator
期刊: IEEE Photon. Tech. Lett.
A one-dimensional photonic crystal racetrack ring resonator coupling with an optimized bus waveguide on a silicon-on-insulator wafer is proposed and demonstrated. The nonuniform free spectral range is...
Single-Mode Emission from Ge Quantum Dots in Photonic Crystal Nanobeam Cavity
期刊: IEEE Photon. Tech. Lett.
A freestanding one-dimensional photonic crystal nanobeam cavity embedded with Ge self-assembled quantum dots is designed and fabricated on a silicon-on-insulator substrate. Only one photoluminescence ...
Low Power and Large Modulation Depth Optical Bistability in an Si Photonic Crystal L3 Cavity
期刊: IEEE Photon. Tech. Lett.
Optical bistability with low power and large modulation depth is observed in the silicon 2D photonic crystal 3 defect-long (L3) cavity coupling with a photonic crystal waveguide experimentally. The ca...
Enhanced light emission from Ge quantum dots in photonic crystal ring resonator
期刊: Optics Express
Light emitter based on Ge quantum dots embedded in photonic crystal ring resonator is designed and fabricated. Six sharp resonant peaks dominate the photoluminescence (PL) spectrum ranging from 1500 t...
Silicon optical diode based on cascaded photonic crystal cavities
期刊: Optics Letters
An all-silicon passive optical diode based on optical nonlinearity in cascaded photonic crystal (PhC) L3 cavities is proposed and demonstrated. A nonreciprocal transmission ratio (NTR) of 30.8 dB and ...
High-quality-factor photonic crystal ring resonator
期刊: Optics Letters
A design for enhancing the quality (Q) factor of a photonic crystal ring resonator (PCRR) is introduced. The highest Q factor based on simulations is 121,000. The analysis of momentum space distributi...
Enhanced 1524-nm Emission From Ge Quantum Dots in a Modified Photonic Crystal L3 Cavity
期刊: IEEE Photon. J.
Light emitters based on Ge quantum dots embedded in modified photonic crystal three defect-long (L3) cavities are fabricated and characterized. Several sharp resonant luminescence peaks dominate the p...
Ultralow Power Nonlinear Response in an Si Photonic Crystal Nanocavity
期刊: IEEE Photon. J.
Optical nonlinear response and bistability behavior are observed in a fabricated silicon photonic crystal three defect-long (L3) nanocavity. The L3 cavity, which is coupled with a photonic crystal wav...