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光电子快报（英文版）
光电子快报（英文版）

巴恩旭

双月刊

1673-1905

oelett@yahoo.com.cn；oel@263.net

022-23674707

300191

天津市南开区红旗南路263号

光电子快报（英文版）/Journal Optoelectronics LettersCSTPCDEI
正式出版
收录年代

    Optical frequency comb with tunable free spectral range based on two Mach-Zehnder modulators cascaded with linearly chirped fiber Bragg grating and phase modula-tor

    GUAN XiangshuaiMU HongqianWANG Muguang
    385-389页
    查看更多>>摘要：An approach for generating optical frequency comb(OFC)with tunable free spectral range(FSR)is proposed.Two Mach-Zehnder modulators(MZMs)driven by phase-shifted sinusoidal signals are cascaded to generate OFC with plentiful comb lines and the FSR controlled by the drive frequency.Subsequently,a linearly chirped fiber Bragg grat-ing(LCFBG)and a phase modulator(PM)are used to increase the comb FSR by a particular integer multiple.There-fore,by simultaneously controlling the drive frequency of MZMs,the dispersion amount of the LCFBG and the drive signal of the PM,an OFC with desired FSR can be achieved.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Visual reconstruction of flexible structure based on fiber grating sensor array and extreme learning machine al-gorithm

    ZHANG SisiYAN JieJIANG MingshunSUI Qingmei...
    390-397页
    查看更多>>摘要：A visual reconstruction method was proposed based on fiber Bragg grating(FBG)sensors and an intelligent algorithm,aiming to solve the problems of low accuracy and complex reconstruction process in conventional reconstruction methods of flexible structures.Firstly,the wavelength data containing structural strain information was captured by FBG sensors,together with deformation displacement information.Subsequently,a predicted model was built based on an extreme learning machine(ELM)and further optimized by the particle swarm optimization(PSO)algorithm.Different deformation patterns were tested on an aluminum alloy plate,indicating the ability of the predicted model to produce the deformation displacement for reconstruction.The experimental results show that the maximum error can be as low as 0.050 mm,which verifies that the proposed method is feasible and satisfied with the deformation moni-toring of the spacecraft structure.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Single silicon waveguide MRR based Fano resonance in the whole spectral bands

    LU LidanWANG ShuaiZENG ZhoumoDONG Mingli...
    398-403页
    查看更多>>摘要：To improve the integration of Fano devices,we design a T-shaped waveguide coupling micro-ring resonator(MRR)structure to achieve a single cavity with Fano resonance in the whole spectral bands.The mathematical relationship between the phase factor,the coupling coefficient of the bus waveguide,and the Fano resonance slope extinction ratio(ER)is established.The electron beam exposure process is used to obtain a device with an insertion loss of-3 dB.The maximum ER of the Fano lineshape exceeds 15 dB,and the slope ratio(SR)is 251.3 dB/nm.This design improves the compactness of the Fano resonant device.
      原文链接:
    • NETL
    • NSTL
    • 万方数据
    • 维普

    A novel dual-beam terahertz leaky-wave antenna based on spoof surface plasmon waveguide

    BAI YukunLIU Song
    404-407页
    查看更多>>摘要：A novel dual-beam terahertz(THz)leaky-wave antenna(LWA)based on triple-periodically(TP)modulated spoof surface plasmon(SSP)waveguide is proposed.It is shown that SSP can be effectively excited and propagated along the surface of parallel corrugated metallic strips.Through proper design,the n=-1 and n=-2 Floquet modes are brought into the leakage radiation region simultaneously.Consequently,the forward and backward propagating waves corresponding to the two modes respectively generate two radiation beams in the far-field region.The proposed an-tenna is capable of steering the forward beam within a range of 34° and the backward beam within a range of 48° when frequency is swept between 0.23 THz and 0.29 THz.A simulated peak gain of 11.4 dBi and gain variation of 2.87 dBi are achieved within the band.The proposed LWA can be applied in THz wireless communication and radar systems.
      原文链接:
    • NETL
    • NSTL
    • 万方数据
    • 维普

    7 Gbit/s optical JK flip flop design with two optical AND gates and NOR gates

    Dipti BansalLovkesh
    408-414页
    查看更多>>摘要：This study presents a simple methodology for implementation of all optical JK flip flop for future optical high speed networks.The scheme utilizes electronic model of JK flip flop for implementation of all optical JK flip flop at the bit rate of 7 Gbit/s.Firstly,all-optical AND and NOR gates are implemented.Furthermore,with the combination of these basic gate structures,the optical model of JK flip flop is verified.This structure makes use of two optical AND gates and two optical NOR gates.This technique uses a semiconductor optical amplifier(SOA)as the nonlinear me-dium to produce considerable amount of cross gain and cross phase modulation to attain truth table conditions of op-tical JK flip flop.In this method,the number of gates is reduced as compared to earlier schemes.Rise time and fall time of 5.6 ps with contrast ratio more than 60 dB are achieved in this design.
      原文链接:
    • NETL
    • NSTL
    • 万方数据
    • 维普

    Optimization of pumping conditions in end pumped Tm:YAP lasers with the consideration of thermal effects

    R.M.El-AgmyA.A.EI-MaarefN.M.Al-Hosiny
    415-418页
    查看更多>>摘要：In this work,we presented the measurements and calculations for the optimal pump conditions and their effects on thermal lens,fracture limit and laser efficiencies of end pumped Tm-doped yttrium aluminum perovskite(Tm:YAP)laser rod pumped at 1 064 nm.The results showed that the measured overall efficiency of produced laser at～1.98 pm is enhanced from 3.9％to 6.9％when the pump spot diameter is reduced from 390 pm to 210 pm.The maximum out-put power and oscillation threshold are also enhanced with reduced pump spot size.The maximum thermal stress and focal length of thermally induced lens are also addressed.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    A dynamic photoresponse model for a pinned photodi-ode in CMOS image sensors

    AO JinghuaGAO ZhiyuanGAO JingXU Jiangtao...
    419-424页
    查看更多>>摘要：A novel dynamic photoresponse model for complementary metal-oxide-semiconductor(CMOS)image sensors with pinned photodiode(PPD)structures is proposed.The PPD is regarded as the bonding structure of the two p-n junc-tions.The transient current equation of the two junctions is calculated by the current-voltage formula of the p-n junc-tion,and the photoresponse curve of the PPD is calculated and drawn by the numerical solution.Simulation results show that the dynamic model successfully restores the entire process of the electron accumulation in the PPD.The difference between the full well capacity(FWC)values which were calculated by the proposed model and the simu-lation results is less than 5％,which is much smaller than the error of 40％for the traditional model.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    A high sensitivity localized surface plasmon resonance sensor based on D-shaped photonic crystal fiber for low refractive index detection

    PAN HonggangCAO ChuanboZHANG AilingPAN Fei...
    425-429页
    查看更多>>摘要：In this paper,a localized surface plasmon resonance(LSPR)refractive index sensor based on photonic crystal fiber(PCF)is proposed to solve the problem of low refractive index analyte detection.31 silver nanowires are placed on the surface of the D-shaped PCF,which increases the contact area between the plasma material and the analyte.The simulation results indicate that the maximum sensitivity of the sensor reaches 16 400 nm/RIU,and the refractive index detection range is 1.26-1.33.It is proved that the sensor has a good prospect in low refractive index detection.
      原文链接:
    • NETL
    • NSTL
    • 万方数据
    • 维普

    Single-walled carbon nanotubes coated D-shaped fiber for aqueous ethanol detection

    Huda Adnan ZainMalathy BatumalayHazli Rafis Abdul RahimMoh Yasin...
    430-433页
    查看更多>>摘要：In this letter,single-walled carbon nanotubes(SWCNT)coating was used on the D-shaped silica fiber for ethanol sensing in aqueous solution.The performance of this structure as an ethanol sensor was studied here by monitoring output power variation and wavelength shift with changing ethanol concentration.In the concentration range of 5％-50％of ethanol,the SWCNT coated structure showed an improved sensitivity compared to the uncoated sample.The sensitivity is improved from 0.013 5 dB/％to 0.040 9 dB/％with the coating.The SWCNT coated sample also showed a peak wavelength shift of 0.1 nmn with the change of ethanol concentration in the same range.
      原文链接:
    • NETL
    • NSTL
    • 万方数据
    • 维普

    Optic-electronics stereo system for spatial position measurement of railway track

    Igor KonyakhinXIAO HanLi RenpuYANG Jiawen...
    434-439页
    查看更多>>摘要：Railway departments in various countries are looking for a technology with convenient operation,low price,excellent measurement performance and stability for spatial position measurement of railway track.Therefore,we design an op-tic-electronics stereo system based on the principle of optical stereo measurement.The experimental verification in the real railway environment shows that the performance of the system is that the longitudinal relative displacement measurement range is 200-10 000 mm,the relative distance measurement range is 4 500 mm and the measured root mean square(RMS)error value is less than 1.1 mm in the whole process.Therefore,it meets the relevant needs of the Russian Ministry of railways.
      原文链接:
    • NETL
    • NSTL
    • 万方数据
    • 维普