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Researchers repurpose failed cancer drug into printable semiconductor（图）
researcher repurpose printable semiconductor
2019/10/17
Many potential pharmaceuticals end up failing during clinical trials, but thanks to new NSF-funded research from the University of Illinois, biological molecules once considered for cancer treatment a...
Single photon sources with single semiconductor quantum dots
single-photon source quantum dot (QD) quantum optics photon correlation
2016/1/23
In this contribution, we briefly recall the basic concepts of quantum optics and properties of semicon-ductor quantum dot (QD) which are necessary to the understanding of the physics of single-photon ...
Wavelength-tunable QAM Synthesis by Direct Modulation of Injection-locked Fabry-Perot Semiconductor Lasers
Wavelength-tunable QAM Synthesis Direct Modulation Injection-locked Fabry-Perot Semiconductor Lasers
2014/11/6
A new scheme for direct and tunable (30nm shown here) QAM synthesis from binary RF data streams is demonstrated with up to 48Gbit/s QPSK, including propagation over 75km SMF-28. Preliminary 16QAM (60G...
Efficiency above the Shockley−Queisser Limit by Using Nanophotonic Effects To Create Multiple Effective Bandgaps With a Single Semiconductor
Photon management nanostructured solar cells Shockley− Queisser limit light trapping tandem solar cells
2015/8/6
We present a pure photonic approach to overcome the Shockley−Queisser limit. A single material can show different effective bandgap, set by its absorption spectrum, which depends on ...
Optical Fano resonance of an individual semiconductor nanostructure
Optical Fano resonance semiconductor nanostructure
2015/8/6
Fano resonances with a characteristic asymmetric line shape can be observed in light scattering, transmission and reflection spectra of resonant optical systems1.
Nonlinear Dynamics in Directly Modulated Semiconductor Lasers with Optical Loop Mirror Feedback
Nonlinear Dynamics Nonlinear Loop Mirror Pulse Multiplication Optical Chaotic And Pulse Mode Locking
2013/1/30
The investigation of the nonlinear dynamics of a semiconductor laser based on nonlinear optical loop mirror (NOLM) feedback using Ge doped optical fiber was carried out experimentally. Animations of c...
Semiconductor Optical Amplifier (SOA)-Fiber Ring Laser and Its Application to Stress Sensing
Fiber Laser Fiber Sensor Ring Laser Semiconductor Optical Amplifier Optical Sensor
2013/1/30
We have developed a novel optical fiber ring laser using a semiconductor optical amplifier (SOA) as the gain medium, and taking advantage of polarization anisotropy of its gain. The frequency differen...
Differential cross-polarization modulation (DXPoM) wavelength conversion using a semiconductor optical amplifier has been proposed to outperform substantially traditional cross-polarization modulation...
A multiwavelength fiber ring laser that is based on an S-band erbium-doped fiber amplifier (EDFA) and a semiconductor optical amplifier (SOA) is developed. An optical switch is used to switch the mult...
This investigation experimentally demonstrates a 40 GHz phase shifter based on a semiconductor laser. The phase shift is achieved by adjusting the bias current and wavelength detuning. The device has ...
ZnSe / ZnS Quantum-Dot Semiconductor Optical Amplifiers
Linear Absorption Coefficient Linear Emission Coefficient Rate Equations (Res) Noise Figure
2013/1/30
ZnSe quantum dot (QD) semiconductor optical amplifier (SOA) is studied theoretically using net gain for linear Absorption coefficient and linear emission and these results are used to calculate noise ...
Hybrid Integration of Semiconductor Optical Amplifier and Silica-based Planar Lightwave Circuit for Low Polarization Dependent Gain
Integrated optics devices Waveguides planar
2015/5/26
We demonstrated a semiconductor optical amplifier hybrid-integrated with a silica-based planar lightwave circuits. With deploying polarization diversity circuit, polarization dependent gain was reduce...
Amplitude Regeneration of Phase Encoded Signals Using Injection Locking in Semiconductor Lasers
Lasers and laser optics Lasers injection-locked
2015/5/25
A phase preserving limiter based on injection locking in semiconductor lasers is experimentally investigated for 10Gb/s phase encoded signals. The proposed scheme exhibits significant amplitude noise ...
Semiconductor Laser White Noise Suppression by Optical Filtering with Ultra-Narrowband FBG
Semiconductor lasers Fiber Bragg gratings
2015/5/21
The white frequency noise of semiconductor lasers is attenuated significantly by optical filtering with an ultra-narrowband fiber Bragg grating. This noise reduction will improve carrier phase estimat...
Characterization of Semiconductor-Laser Phase Noise with Digital Coherent Receivers
Characterization Semiconductor-Laser Phase Noise Digital Coherent Receivers
2015/5/20
We develop a method of characterizing semiconductor-laser phase noise using a digital coherent receiver. The field spectrum, FM-noise spectrum, and phase-error variance can completely describe phase-n...