期刊文献+
共找到5篇文章
< 1 >
每页显示 20 50 100
Radiation-induced attenuation self-compensating effect in super-fluorescent fiber source 被引量:2
1
作者 杨远洪 索鑫鑫 杨巍 《Chinese Physics B》 SCIE EI CAS CSCD 2014年第9期266-270,共5页
The compact super-fluorescent fiber source (SFS) output spectra variations at different pump currents and under different dose of gamma-ray radiation were measured and compared respectively. The radiation-induced at... The compact super-fluorescent fiber source (SFS) output spectra variations at different pump currents and under different dose of gamma-ray radiation were measured and compared respectively. The radiation-induced attenuation (RIA) self-compensating effect in SFS based on photo-bleaching was found and the general mathematic model of SFS output spectra variations was made. The radiation-induced background attenuation (RIBA) at the pump wavelength was identified to be the main cause of the total output power and spectra variations and the variations can then be compensated by active control of the pump power to enhance the self-compensating effect. With closed-loop feedback control of pump current, double-pass backward (DPB) configuration and spectrum re-shaping technology, an SFS prototype was made and tested. The mean-wavelength stability of about 87.4 ppm and output power instability of less than 5% were achieved under up to 200 krad (Si) gamma-ray irradiation. 展开更多
关键词 super-fluorescent fiber source Er-doped fiber radiation-induced attenuation mean wavelength stability
原文传递
Experimental Research on Erbium-doped Superfluorescent Fiber Source 被引量:2
2
作者 CHENSheng-ping LUKe-cheng LIYi-gang LIJia-fang ZHUJian-ping FENGMing LIJing 《Semiconductor Photonics and Technology》 CAS 2004年第2期122-126,共5页
The effects of the variations in fiber length,fiber mirror reflectance on efficiency and output power are experimentally investigated for erbium-doped double pass backward superfluorescent fiber sources (SFSs).The inf... The effects of the variations in fiber length,fiber mirror reflectance on efficiency and output power are experimentally investigated for erbium-doped double pass backward superfluorescent fiber sources (SFSs).The influence of fiber length on mean wavelength stability (MWS) has also been demonstrated.By incorporating a short section of un-pumped erbium-doped fiber (EDF) at the output port,the pump power dependent on MWS becomes independent of pumped EDF length.This is a novel phenomenon that hasn’t been reported up to now,and should be helpful to SFS fabrication and theory analysis.By using a fiber Michelson interferometer as spectrum slicing component,a multi-wavelength fiber source (MWFS) with ~20 channels (from 1 542 nm to 1 559 nm) is got.The MWFS has a channel spacing of ~0.8 nm which satisfies ITU-standard.The intensity fluctuation among channels is less than 0.5 dB,and the extinction ratio of all channels is above 14 dB.This kind of MWFS should be useful to wavelength division multiplexing systems. 展开更多
关键词 Superfluorescent fiber source erbium-doped fiber Double pass backward configuration Mean wavelength stability Multi-wavelength fiber source
下载PDF
Experimental optimization of an erbium-doped super-fluorescent fiber source for fiber optic gyroscopes
3
作者 常金龙 谭满清 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2011年第10期62-66,共5页
Double-pass forward and double-pass backward erbium-doped super-fluorescent fiber sources(EDSFSs) were combined in one configuration.A 980 nm laser diode pumped the same erbium-doped fiber from both directions using... Double-pass forward and double-pass backward erbium-doped super-fluorescent fiber sources(EDSFSs) were combined in one configuration.A 980 nm laser diode pumped the same erbium-doped fiber from both directions using a coupler as a power splitter.The double-pass configuration was achieved by coating the fiber end face.Firstly,an optimal fiber length was found to obtain a high stability of output light wavelength with pump power, and then 1530/1550 nm wavelength division multiplexing was used for spectrum planarization,which expanded the bandwidth to more than 22 nm.The final step was a test of temperature stability.The results show that the rate of the central wavelength change kept to below 3.5 ppm/℃in the range of -40 to 60℃and 1-2 ppm/℃in the range of 20-30℃.Considering all the three factors of the fiber optic gyro applications,we selected 80 mA as the pump current,in which case the central wavelength temperature instability was calculated as 2.70 ppm/℃, 3 dB bandwidth 22.85 nm,spectral flatness 0.2 dB,output power 5.17 mW and power efficiency up to 9.92%.This experimental result has a significant reference value to the selection of devices and proper design of ED-SFSs for the application of high-precision fiber optic gyroscopes. 展开更多
关键词 erbium-doped super-fluorescent fiber source central wavelength stability pump from both directions spectrum planarization coating on the fiber end high-precision fiber optic gyroscope
原文传递
Theoretical study on erbium ytterbium co-doped super-fluorescent fiber source 被引量:1
4
作者 郭文涛 杜峰 +2 位作者 谭满清 焦健 郭小峰 《Journal of Semiconductors》 EI CAS CSCD 2016年第1期83-87,共5页
Erbium ytterbium co-doped super-fluorescent fiber source (EYD-SFS) has been simulated by a theoret- ical model based on rate equations and power transfer equations. The output performances of four basic structures o... Erbium ytterbium co-doped super-fluorescent fiber source (EYD-SFS) has been simulated by a theoret- ical model based on rate equations and power transfer equations. The output performances of four basic structures of EYD-SFS have been expressed, and it indicated that the DPF structure is a preferable structure. The dependence of output power, mean wavelength and bandwidth stability on the pump fiber length and the concentration of Er3+ and Yb3+ have also been studied. The results indicated with a proper doping concentration of Er3+ and Yb3+ of 6.0 × 10^26 ions/m3 and 1.0 × 10^27 ions/m3, the optimal gain fiber length is 3.6 cm. In this condition, good performances of DPF structure of EYD-SFS have been achieved. 展开更多
关键词 super-fluorescent fiber source (SFS) erbium ytterbium co-doped fiber (EYDF) amplified sponta-neous emission (ASE) numerical simulation
原文传递
Novelty Design in Gain Flattening Filter of ASE Source Based on Fat Ultra-Long Period Fiber Grating 被引量:1
5
作者 Fereshteh Mohammadi NAFCHI Sharifeh SHAHI +2 位作者 Mohammad Taha SHAFFAATIFAR Mohammad KANANI Hossein NOORMOHAMMADI 《Photonic Sensors》 SCIE EI CAS CSCD 2016年第3期243-248,共6页
A new type of gain flattening filter for amplified spontaneous emission (ASE) source based on erbium doped fiber (EDF) is proposed and demonstrated by fabricating and writing two series ultra-long period fiber gra... A new type of gain flattening filter for amplified spontaneous emission (ASE) source based on erbium doped fiber (EDF) is proposed and demonstrated by fabricating and writing two series ultra-long period fiber grating (ULPFG) on single mode fiber (SMF-28). The novelty method in this research is based on writing the two ULPFGs as fat gratings. The LPG is written by a simple and available arc-discharge method. The pump power based on single-pass backward pump configuration is around 100mW, and the average wavelength is near to 974nm. The gain flattening profile is obtained by 3.4 (±1.7)dB ripple in the wavelength range between 1524nm and 1565nm with 41-nm band width. 展开更多
关键词 Amplified spontaneous emission (ASE) source erbium-doped fiber amplifier (EDFA) gain flatteningfilter long-period fiber grating (LPFG)
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部