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Capturing light pulses into a pair of coupled photonic crystal cavities
Capturing light pulses coupled photonic crystal cavities
2015/8/10
We describe finite-difference time-domain simulations of a two-dimensional photonic crystal implementation of a two-resonator system capable of capturing light pulses from a waveguide. As much a...
Classification of the Core Modes of Hollow-Core Photonic-Bandgap Fibers
Finite difference methods optical fi bers optical fi ber communication
2015/8/10
Using a new full-vectorial finite-difference mode solver utilizing a hexagonal Yee’s cell, we calculated the dispersion diagram of a slightly multimode (16 modes) air-core photonic-bandgap ʂ...
Universal features of coherent photonic thermal conductance in multilayer photonic band gap structures
Universal features photonic thermal conductance multilayer photonic band gap structures
2015/8/10
We show that at the high-temperature limit, the coherent photonic thermal conductance of a multilayer photonic crystal can be significantly below the corresponding thermal conductance of vacuum....
Digital Coherent Detection of Multi-Gigabit 16-QAM signals at 40 GHz Carrier Frequency using Photonic Downconversion
Digital Coherent Detection Multi-Gigabit Carrier Frequency Photonic Downconversion
2015/7/21
We experimentally demonstrate detection of multi-gigabit 16-QAM modulated signals, of up to 4 Gb/s, at a 40 GHz carrier frequency by combining photonic downconversion and low bandwidth electronics.
First Demonstration of Photonic Bandgap Guidance in Hollow-core Photonic Bandgap Fibres with Square Lattice Cladding
Photonic Bandgap Guidance Hollow-core Photonic Bandgap Fibres Square Lattice Cladding
2015/7/20
Square lattice with much higher node-to-strut ratio is promising for significantly extending bandgaps in hollow-core fibres. First such fibres are achieved here. Minimum loss of 67dB/km is demonstrate...
Microwave Photonic Technologies for Flexible Satellite Telecom Payloads
Microwave Photonic Technologies Flexible Satellite Telecom Payloads
2015/7/20
Photonics and microwave photonics are emerging as enabling technologies for advanced payload concepts with enhanced flexibility in future telecom satellites.
Sensing Ultra-Low-Power Radio Signals by Photonic Analog-to-Digital Conversion
Sensing Radio Signals Photonic Analog-to-Digital Conversion
2015/7/20
A time-stretched photonic analog-to-digital converter with optical amplification is proposed to sense ultra-low power signals for cognitive radio applications. Experimental results show that -65 dBm R...
Generation of 173-Gbits/s single-polarization QPSK signals by all-optical format conversion using a photonic integrated device
single-polarization QPSK signals all-optical conversion photonic integrated device
2015/7/20
We report generation of high spectral-efficiency modulation formats at 86.4 Gbaud/s by all-optical format conversion using a device integrating semiconductor optical amplifies. We demonstrate generati...
Highly Linear, High Power Handling Photodiode for RF Photonic Links
Highly Linear High Power Handling Photodiode RF Photonic Links
2015/7/20
We report a highly linear, high power handling InGaAs photodiode having a third order harmonic output intercept point of +53.7 dBm and an estimated OIP3 of +48.9 dBm up to 40 mA DC photocurrent.
A novel linear photonic RF phase shifter base on polarization controller
linear photonic RF phase shifter polarization controller
2015/7/17
A novel linear photonic RF phase shifter base on polarization controller is presented and the theoretical fundamentals of the design are explained. A prototype of the phase shifter with 26.75GHz bandw...
All-Optical Spatial Multicasting Using Cascaded Silicon Photonic Devices
All-Optical Spatial Cascaded Silicon Photonic Devices
2015/7/17
We demonstrate all-optical spatial multicasting enabled by nanophotonic devices in two cascaded silicon chips. We evaluate each spatially-multicasted signal using 10-Gb/s BER measurements, facilitatin...
MMI-Reflector: A Novel On-chip Reflector for Photonic Integrated Circuits
MMI-Reflector Novel On-chip Reflector Photonic Integrated Circuits
2015/7/17
We present a novel, compact, on-chip multi-mode interference (MMI) reflector, with near-100% theoretical reflection. We measured 78±10% reflection for an InP-based MMI-reflector fabricated with a sing...
Novel 3D Hollow Optical Waveguide with Lateral and Vertical Periodicity for Tunable Photonic Integrated Circuits
3D Hollow Optical Waveguide Lateral Vertical Periodicity Tunable Photonic Integrated Circuits
2015/7/17
A novel design-flexible 3D-hollow-waveguide with lateral- and vertical-periodicity has been demonstrated. A high-index-contrast-grating-(HCG), introduced as a lateral-periodicity, provides vertical as...
High-order micro-ring resonator assisted wavelength converters for scalable and power efficient photonic routers
resonator wavelength converters power efficient photonic routers
2015/7/17
We design and demonstrate the first higher-order silicon micro-ring resonators suitable for wavelength conversion. We show that 40 and 160Gb/s wavelength conversion is feasible with a SOA followed by ...
Photonic Crystal Fiber with Ring-Core Hollow-Defect for Evanescent Wave Chemical Sensing
Photonic Crystal Fiber Ring-Core Hollow-Defect Evanescent Wave Chemical Sensing
2015/7/16
A doped-ring hollow-defect structure is proposed in photonic crystal fiber to acheive a higher evanescent field. Vectorial modal analysis with finite element method and experimental results confirmed ...