期刊文献+
共找到12篇文章
< 1 >
每页显示 20 50 100
All-Optical Sampling Using Nonlinear Polarization Rotation in a Single Semiconductor Optical Amplifier 被引量:2
1
作者 张尚剑 张谦述 +2 位作者 李和平 刘永智 刘永 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2008年第6期1031-1035,共5页
We propose a novel all-optical sampling method using nonlinear polarization rotation in a semiconductor optical amplifier. A rate-equation model capable of describing the all-optical sampling mechanism is presented in... We propose a novel all-optical sampling method using nonlinear polarization rotation in a semiconductor optical amplifier. A rate-equation model capable of describing the all-optical sampling mechanism is presented in this paper. Based on this model, we investigate the optimized operating parameters of the proposed system by simulating the output intensity of the probe light as functions of the input polarization angle, the phase induced by the polarization controller, and the ori- entation of the polarization beam splitter. The simulated results show that we can obtain a good linear slope and a large linear dynamic range,which is suitable for all-optical sampling. The operating power of the pump light can be less than lmW. The presented all-optical sampling method can potentially operate at a sampling rate up to hundreds GS/s and needs low optical power. 展开更多
关键词 optical signal processing all-optical sampling semiconductor optical amplifier nonlinear polarization rotation
下载PDF
Towards 640 Gbit/s wavelength conversion based on nonlinear polarization rotation in a semiconductor optical amplifier 被引量:1
2
作者 冯传奋 伍剑 +2 位作者 张君毅 徐坤 林金桐 《Chinese Physics B》 SCIE EI CAS CSCD 2008年第3期1000-1007,共8页
Taking into account ultra-fast carrier dynamics, this paper models 640 Gbit/s wavelength conversion scheme based on nonlinear polarization rotation (NPR) in a single semiconductor optical amplifier (SOA) and inves... Taking into account ultra-fast carrier dynamics, this paper models 640 Gbit/s wavelength conversion scheme based on nonlinear polarization rotation (NPR) in a single semiconductor optical amplifier (SOA) and investigates the performance of this kind of wavelength conversion scheme in detail. In this model, two carrier temperature equations are introduced to substitute two energy density equations, which reduce the complexity of calculation in comparison with the previous model. The temporary gain and phase shift dynamics induced by ultra-short optical pulses are numerically simulated and the simulated results are qualitatively in good agreement with reported experimental results. Simulated results show that non-inverted and inverted 640 Gbit/s wavelength conversions based on NPR are achieved with clear open eye diagrams. To further investigate the performance of the non-inverted wavelength conversion scheme, the dependence of output extinction ratio (ER) on some key parameters used in simulation is illustrated. Furthermore, simulated analyses show that high performance non-inverted wavelength conversion based on NPR can be achieved by using a red-shifted filtering scheme. 展开更多
关键词 all-optical wavelength conversion nonlinear polarization rotation semiconductor optical amplifier ultra-fast carrier dynamics
下载PDF
Noise-like pulse generation from a thulium-doped fiber laser using nonlinear polarization rotation with different net anomalous dispersion 被引量:6
3
作者 Shuo Liu Fengping Yan +4 位作者 Yang Li Luna Zhang Zhuoya Bai Hong Zhou Yafei Hou 《Photonics Research》 SCIE EI 2016年第6期318-321,共4页
A mode-locked thulium-doped fiber laser(TDFL) based on nonlinear polarization rotation(NPR) with different net anomalous dispersion is demonstrated. When the cavity dispersion is-1.425 ps^2, the noise-like(NL) pulse w... A mode-locked thulium-doped fiber laser(TDFL) based on nonlinear polarization rotation(NPR) with different net anomalous dispersion is demonstrated. When the cavity dispersion is-1.425 ps^2, the noise-like(NL) pulse with coherence spike width of 406 fs and pulse energy of 12.342 nJ is generated at a center wavelength of 2003.2 nm with 3 dB spectral bandwidth of 23.20 nm. In the experimental period of 400 min, the 3 dB spectral bandwidth variation, the output power fluctuation, and the central wavelength shift are less than 0.06 nm, 0.04 d B, and0.4 nm, respectively, indicating that the NPR-based TDFL operating in the NL regime holds good long-term stability. 展开更多
关键词 NPR NET Noise-like pulse generation from a thulium-doped fiber laser using nonlinear polarization rotation with different net anomalous dispersion MODE
原文传递
Optical sampling system using periodically-poled lithium niobate waveguide and nonlinear polarization rotation mode-locked fiber laser 被引量:2
4
作者 Jian LI Aiying YANG +2 位作者 Lin ZUO Junsen LAI Yunan SUN 《Frontiers of Optoelectronics》 2012年第2期208-213,共6页
A novel design of optical sampling system has been developed by using sum-frequency generation (SFG) in a periodically-poled lithium niobate (PPLN) waveguide and using passive mode-locked fiber laser pulses as opt... A novel design of optical sampling system has been developed by using sum-frequency generation (SFG) in a periodically-poled lithium niobate (PPLN) waveguide and using passive mode-locked fiber laser pulses as optical sampling pulses. The system achieved high temporal resolution and high sensitivity using a 30 mm length PPLN with quasi phase match period of 19.3 μm and 151 fs sampling pulses which were generated by passive modelock fiber laser based on nonlinear polarization rotation (NPR). Clear eye-diagram of 10 Gbit/s non-return-to-zeros (NRZ) pseudorandom binary sequence (PRBS) optical signal were successfully reconstructed by this system. 展开更多
关键词 periodically-poled lithium niobate (PPLN) optical sampling nonlinear polarization rotation (NPR)fiber laser sum-fi'equency generation (SFG)
原文传递
Temporal contrast enhancement by nonlinear elliptical polarization rotation in a multi-pass cell 被引量:1
5
作者 Jiajun Song Liya Shen +2 位作者 Jianyu Sun Yujie Peng Yuxin Leng 《High Power Laser Science and Engineering》 SCIE CAS CSCD 2022年第5期14-19,共6页
We demonstrate the simultaneous temporal contrast improvement and pulse compression of a Yb-doped femtosecond laser via nonlinear elliptical polarization rotation in a solid state multi-pass cell.The temporal contrast... We demonstrate the simultaneous temporal contrast improvement and pulse compression of a Yb-doped femtosecond laser via nonlinear elliptical polarization rotation in a solid state multi-pass cell.The temporal contrast is improved to 109,while the pulse is shortened from 181 to 36 fs,corresponding to a compression factor of 5.The output beam features excellent beam quality with M^(2) values of 1.18×1.16.The total efficiency of the contrast enhancement system exceeds 50%.This technique will have wide applications in high temporal contrast ultra-intense femtosecond lasers. 展开更多
关键词 multi-pass cell nonlinear elliptical polarization rotation pulse compression temporal contrast
原文传递
Investigation of ellipticity and pump power in a passively mode-locked fiber laser using the nonlinear polarization rotation technique 被引量:1
6
作者 H. Ahmad S. I. Ooi +5 位作者 M. Z. A. Razak S. R. Azzuhri A. A. Jasim K. Thambiratnam M. F. Ismail M. A. Ismail 《Chinese Optics Letters》 SCIE EI CAS CSCD 2017年第5期45-49,共5页
An elliptical initial polarization state is essential for generating mode-locked pulses using the nonlinear polarization rotation technique. In this work, the relationship between the ellipticity ranges capable of mai... An elliptical initial polarization state is essential for generating mode-locked pulses using the nonlinear polarization rotation technique. In this work, the relationship between the ellipticity ranges capable of maintaining mode-locked operation against different pump power levels is investigated. An increasing pump power, in conjunction with minor adjustments to the polarization controller's quarter waveplate, results in a wider ellipticity range that can accommodate mode-locked operation. Other parameters such as noise, pulsewidth, and average output power are also observed to vary as the ellipticity changes. 展开更多
关键词 MODE Investigation of ellipticity and pump power in a passively mode-locked fiber laser using the nonlinear polarization rotation tec
原文传递
Generation of cavity-birefringence-dependent multi-wavelength bright-dark pulse pair in a figure-eight thulium-doped fiber laser 被引量:4
7
作者 Xiao-Fa Wang Dong-Xin Liu +1 位作者 Hui-Hui Han Hong-Yang Mao 《Chinese Physics B》 SCIE EI CAS CSCD 2021年第5期390-394,共5页
We experimentally demonstrated a stable multi-wavelength bright-dark pulse pair in a mode-locked thulium-doped fiber laser(TDFL).The nonlinear polarization rotation(NPR)and nonlinear optical loop mirror(NOLM)were empl... We experimentally demonstrated a stable multi-wavelength bright-dark pulse pair in a mode-locked thulium-doped fiber laser(TDFL).The nonlinear polarization rotation(NPR)and nonlinear optical loop mirror(NOLM)were employed in a figure-eight cavity to allow for multi-wavelength mode-locking operation.By incorporating different lengths of high birefringence polarization-maintaining fiber(PMF),the fiber laser could operate stably in a multi-wavelength emission state.Compared with the absence of the PMF,the birefringence effect caused by PMF resulted in rich multi-wavelength optical spectra and better intensity symmetry and stability of the bright-dark pulse pair. 展开更多
关键词 bright-dark pulse pair nonlinear polarization rotation fiber laser polarization-maintaining fiber
下载PDF
A theoretical and experimental study on all-normal-dispersion Yb-doped mode-locked fiber lasers 被引量:2
8
作者 池俊杰 李平雪 +6 位作者 杨春 赵自强 李尧 王雄飞 钟国舜 赵鸿 姜东升 《Chinese Physics B》 SCIE EI CAS CSCD 2013年第4期268-273,共6页
We report on a theoretical and experimental study of an all-normal-dispersion (ANDi) Yb-doped mode-locked fiber laser, in which nonlinear polarization rotation (NPR) is used to realize mode-locking without any dis... We report on a theoretical and experimental study of an all-normal-dispersion (ANDi) Yb-doped mode-locked fiber laser, in which nonlinear polarization rotation (NPR) is used to realize mode-locking without any dispersion compensation. Based on the coupled nonlinear Schr6dinger (CNLS) equation, a model simulating the mode-locked process of an all-normal-dispersion ring fiber laser is developed, which shows that the achievement of stable mode-locking depends on the alignment of the polarization controller (PC) along the fast-polarization axis of the fiber, the birefringence intensity, and the net cavity dispersion. According to the theoretical analysis, stable mode-locked pulses with pulse duration 300 ps and average output power 33.9 mW at repetition rate 36 MHz are obtained. 展开更多
关键词 all-normal-dispersion nonlinear polarization rotation MODE-LOCKED Yb-doped fiber laser
下载PDF
Transition state to mode locking in a passively mode-locked erbium-doped fibre ring laser 被引量:1
9
作者 刘佳锐 徐文成 +2 位作者 罗智超 罗爱平 殷海森 《Chinese Physics B》 SCIE EI CAS CSCD 2011年第5期255-260,共6页
The transition state between the continuous wave region and the mode-locked region in a passively mode-locked erbium-doped fibre ring laser has been experimentally observed by utilizing the nonlinear polarization rota... The transition state between the continuous wave region and the mode-locked region in a passively mode-locked erbium-doped fibre ring laser has been experimentally observed by utilizing the nonlinear polarization rotation technique. When the pump power reaches the mode-locked threshold, the metastable pulse train with a tunable repetition rate is obtained in the transition from the continuous wave state to the passive mode-locked state via proper adjustment of the polarization controller. A simpie model has been established to explain the experimental observation. 展开更多
关键词 transition state erbium-doped fibre laser mode locking nonlinear polarization rotation
下载PDF
Generation of 12th order harmonic mode-locking in a Nd-doped single-mode all-fiber laser operating at 0.9μm
10
作者 张斌 李平 +5 位作者 刘兆军 李明 刘靖 赵浩旭 胡琼宇 陈晓寒 《Chinese Optics Letters》 SCIE EI CAS CSCD 2023年第1期97-103,共7页
Based on the Nd-doped single-mode fiber as the gain medium,an all-fiber 12th harmonic mode-locked(HML)laser operating at the 0.9μm waveband was obtained for the first time,to the best of our knowledge.A mandrel with ... Based on the Nd-doped single-mode fiber as the gain medium,an all-fiber 12th harmonic mode-locked(HML)laser operating at the 0.9μm waveband was obtained for the first time,to the best of our knowledge.A mandrel with a diameter of 10 mm was employed to introduce bending losses to suppress mode competition at 1.06μm,which resulted in a suppression ratio of up to 54 dB.The 1st–12th order HML pulses with the tunable repetition rate of 494.62 kHz–5.94 MHz were obtained in the mode-locked laser with a center wavelength of∼904 nm.In addition,the laser has an extremely low threshold pump power of 88 mW.To the best of our knowledge,this is the first time that an HML pulse has been achieved in a 0.9μm Nd-doped single-mode all-fiber mode-locked laser with the advantages of low cost,simple structure,and compactness,which could be an ideal light source for two-photon microscopy. 展开更多
关键词 Nd-doped fiber laser harmonic mode-locking bending loss nonlinear polarization rotation low repetition rate
原文传递
Recent progress in multi-wavelength fiber lasers:principles,status,and challenges 被引量:5
11
作者 Hualong Chen Xiantao Jiang +1 位作者 Shixiang Xu Han Zhang 《Chinese Optics Letters》 SCIE EI CAS CSCD 2020年第4期36-62,共27页
In recent years,multi-wavelength fiber lasers play a significant role in plenty of fields,ranging from optical communications to mechanical processing and laser biomedicine,owing to their high beam quality,low cost,an... In recent years,multi-wavelength fiber lasers play a significant role in plenty of fields,ranging from optical communications to mechanical processing and laser biomedicine,owing to their high beam quality,low cost,and excellent heat dissipation properties.Benefitting from increasing maturity of optical elements,the multi-wavelength fiber laser has made rapid developments.In this review,we summarize and analyze diverse implementation methods covering continuous wave and pulsed fiber lasers at room temperature conditions:inserting an optical filter device and intensity-dependent loss structure in the resonant cavity,and applying ultrafast nonlinear optical response of materials and a dual-cavity structure.Finally,future challenges and perspectives of the multi-wavelength fiber laser are discussed and addressed. 展开更多
关键词 multi-wavelength fiber laser optical filter nonlinear polarization rotation nonlinear amplification loop mirror 2D materials
原文传递
Study of All-Optical Sampling Using a Semiconductor Optical Amplifier
12
作者 Chen WU Yongjun WANG +1 位作者 Lina WANG Fu WANG 《Photonic Sensors》 SCIE EI CAS CSCD 2017年第1期37-43,共7页
All-optical sampling is an important research content of all-optical signal processing. In recent years, the application of the semiconductor optical amplifier (SOA) in optical sampling has attracted lots of attenti... All-optical sampling is an important research content of all-optical signal processing. In recent years, the application of the semiconductor optical amplifier (SOA) in optical sampling has attracted lots of attention because of its small volume and large nonlinear coefficient. We propose an optical sampling model based on nonlinear polarization rotation effect of the SOA. The proposed scheme has the advantages of high sampling speed and small input pump power, and a transfer curve with good linearity was obtained through simulation. To evaluate the performance of sampling, we analyze the linearity and efficiency of sampling pulse considering the impact of pulse width and analog signal frequency. We achieve the sampling of analog signal to high frequency pulse and exchange the positions of probe light and pump light to study another sampling. 展开更多
关键词 All-optical sampling semiconductor optical amplifier nonlinear polarization rotation
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部