搜索结果: 1-15 共查到“知识库 工学 Lasers”相关记录95条 . 查询时间(0.152 秒)
Developing fiber lasers with Bragg reflectors as deep sea hydrophones
hydrophones Bragg fiber-laser pressure sensors
2015/9/8
The present paper will discuss the work in progress at the Department of Physics of the University of Pisa in collaboration
with the IFAC laboratory of CNR in Florence to develop pressure sensors wit...
Highly Tm-doped silicate glasses and fibers were developed, which exhibit a high slope efficiency of 68.3% and a gain per unit length of greater than 2dB/cm. Single frequency fiber lasers with laser l...
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...
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...
Taming random lasers through active spatial control of the pump
Taming random lasers active spatial control pump
2012/2/24
Active control of the pump spatial profile is proposed to exercise control over random laser emission. We demonstrate numerically the selection of any desired lasing mode from the emission spectrum. A...
On the Interest of Chirped Lasers for AMOOFDM Transmissions in Long Distance PON Networks
Fiber optics communications Modulation
2015/5/26
We report the performance of a chirped laser in IMDD-based transmissions and we show that the interplay between laser chirp and fiber dispersion can be very attractive for long distance PONs if adapti...
Transmission of Multi-Band OFDM-UWB Signals along NG-FTTH Networks using Directly Modulated Lasers
Modulation Optical communications
2015/5/26
Transmission of multi-band OFDM-UWB signals along FTTH networks using directly modulated lasers is experimentally evaluated. Reach of 100 km of standard SMF is achieved with a BER below 10 -4 and an O...
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 ...
Single-mode 1.52 μm InAs/InP quantum dot DFB lasers
Quantum devices Lasers distributed-feedback
2015/5/25
Single-mode InAs/InP quantum dot DFB lasers with side-mode suppression ratio greater than 62 dB are demonstrated, operating CW up to 80°C. Relative intensity noise was less than -153 dB/Hz from 1 MHz ...
High-Speed Potential of Field-Induced Charge-Separation Lasers for Short-link Applications
Vertical cavity surface emitting lasers Laser theory Modulation
2015/5/25
Novel three-terminal FICSLs in VCSEL form were designed and fabricated for direct gain modulation, which by analysis introduces an additional zero to the modulation transfer function and promises modu...
We have developed 1.3-μm, 50-Gbit/s EADFB lasers for future 400Gbit Ethernet. 10-and 40-km SMF transmission with clear eye openings over 14-nm wavelength range under 50-Gbit/s operation are demonstrat...
40-Gbps Transmission Using Direct Modulation of 1.3-μm AlGaInAs MQW Distributed-Reflector Lasers up to 70oC
Semiconductor lasers
2015/5/25
40-Gbps transmission over 5-km single-mode fiber using a directly modulated 1.3-μm AlGaInAs MQW distributed-reflector laser was demonstrated. Error-free operations up to 70oC have been achieved.
We describe the performance of 1.3-μm InGaAlAs RWG-MQW-DFB lasers and EA-DFB lasers applicable to 40G/100G Ethernet. We obtained a 3-dB-down bandwidth frequency of over 30 GHz and clear eye opening at...
High-Power,Low-Noise Slab-Coupled Optical Waveguide (SCOW) Amplifiers and Lasers
Semiconductor optical amplifiers Semiconductor lasers Mode-locked lasers
2015/5/22
We review the development of a Watt-level semiconductor quantum-well gain medium based on the slab-coupled optical waveguide (SCOW) concept. Devices realized in the 1.5-m-wavelength region inc...
Tunable Slotted Fabry-Pérot Lasers for Agile Optical Networks
Tunable Lasers Fiber Optic Communications Switching, packet
2015/5/21
We present work carried out to examine the characteristics and transmission performance of a three section tunable slotted Fabry-Pérot laser. The low cost laser exhibits many attractive properties inc...