1–20 von 21 Ergebnissen
|

    Fiber Fabry-Perot cavities using linearly chirped fiber Bragg gratings

    Li, Hong / Wang, Dongning | SPIE | 2001
    Fiber Fabry-Perot cavities with linearly chirped gratings in the two arms of a coupler is investigated. Various interference patterns ...

    Apodized, plane-by-plane written chirped fiber Bragg gratings in polarization-maintaining fibers for dispersion control in all-fiber ultrafast lasers

    Willer, Yannick / Zhang, Zhenyu / Angelmahr, Martin et al. | SPIE | 2023
    We present a femtosecond laser written, apodized chirped fiber Bragg grating (acFBG) used for dispersion control inside picosecond all ...

    Chirped DFB gratings using bent waveguides to tailor specific laser properties

    Hillmer, Hartmut | SPIE | 1996
    Bent waveguides are superimposed on homogeneous distributed feedback (DFB) grating fields to generate chirped DFB gratings. This efficient ...

    Chirped-grating tunable DFB laser: novel laser diode with broader continuous tuning range

    Chen, Nong / Kitamoto, Asanobu / Nakano, Yoshiaki et al. | SPIE | 1993
    A novel wavelength-tunable semiconductor laser is proposed, where use is made of a chirped grating. Threshold conditions of this chirped ...

    Wavelength tuning fiber ring mode-locking laser by tunable chirped fiber Bragg grating

    Zhao, Chunliu / Ma, Ning / Ding, Lei et al. | SPIE | 2001
    Utilizing large dispersion of a chirped fiber Bragg rating (CFBG), a wavelength tunable mode-locked fiber ring laser was obtained in the ...

    Dual-wavelength DFB fiber laser based on a chirped structure and the equivalent phase shift method

    Dai, Yitang / Chen, Xiangfei / Sun, Jie et al. | SPIE | 2006
    A chirped, phase-shifted structure is demonstrated for compact multi-wavelength DFB fiber laser at room temperature for the first time. The ...

    Dynamics and performance of hybrid distributed Bragg reflector lasers including a chirped fiber grating

    Duan, GuangHua / Helmers, H. / Leroy, A. et al. | SPIE | 2002
    distributed Bragg reflector lasers including a chirped fiber grating. An original analysis of such lasers based on a modified second order rate ...

    High power OPCPA system for in-vivo 2- and 3-photon brain imaging

    Schulz, M. / Braatz, T. / Zapolnova, E. et al. | SPIE | 2021
    An optical parametric chirped-pulse amplifier (OPCPA) system is presented, capable of providing ultrashort laser pulses at all relevant ...

    12 nJ, 250 fs pulses from an all-PM-fiber laser oscillator

    Pielach, Mateusz / Piechal, Bernard / Szczepanek, Jan et al. | SPIE | 2021
    oscillator emits 12 nJ pulses at a repetition rate of 7.56 MHz. Positively chirped pulses from an all-normal-dispersion cavity can be externally ...

    Tunable wavelength-stabilized mode-locked thulium-doped fiber laser beyond 2000 nm

    Bartnick, Moritz / Bharathan, Gayathri / Goebel, Thorsten A. et al. | SPIE | 2022
    We demonstrate operation of a tunable mode-locked thulium-doped fiber laser, based on a wavelength-selective chirped fiber Bragg grating ...

    Multi-wavelength SOA-fiber laser with versatile multichannel filters based on fiber Bragg gratings

    Moon, Dae Seung / Han, Young-Geun / Dong, Xinyong et al. | SPIE | 2006
    chirped fiber Bragg grating, respectively, is demonstrated. The proposed SOA-fiber laser offers advantages such as simple structure, low loss ...

    Raman suppression in kW-level narrow-linewidth one-stage MOPA fiber laser by CTFBG

    Zhao, Xiaofan / Tian, Xin / Wang, Meng et al. | SPIE | 2021
    chirped and tilted fiber Bragg grating (CTFBG) as a broadband rejection filter to suppress the Raman stokes light in the output laser. We finally ...

    Fiber lasers in ultrafast optics

    Fermann, Martin E. / Sucha, Gregg D. / Galvanauskes, Almantas et al. | SPIE | 1999
    ultrafast fiber amplifier designs and compact chirped pulse amplification systems in conjunction with chirped periodically-poled LiNbO3 ...

    Fiberized semiconductor ring laser with passive suppression of supermode noise

    Quinlan, F. / Gee, S. / Ozharar, S. et al. | SPIE | 2005
    with a 20 meter cavity whose pulses are down chirped. No active feedback control is utilized to reduce the noise, yet the integrated jitter is ...

    Two-mode elliptical-core weighted fiber sensors for vibration analysis

    Vengsarkar, Ashish M. / Murphy, Kent A. / Fogg, Brian R. et al. | SPIE | 1992
    derivatives of the modes of vibration to be enhanced. We also demonstrate the use of chirped, two-mode gratings in fibers as spatial modal sensors ...

    Vibration analysis in simply supported cable using weighted optical fiber sensors

    Murphy, Kent A. / Tran, Tuan A. / de Vries, Marten J. et al. | SPIE | 1994
    . To date, such weighted sensitivity fibers have been fabricated by either writing spatially chirped refractive index gratings in two-mode ...

    Q-switched/cw pulse trains produced by mode-locked fiber laser

    Thai, Serey / Getbehead, Mark A. / Pirich, Andrew R. | SPIE | 2000
    laser was constructed in a Fabry-Perot configuration using a fiber Bragg grating as a front reflector and a fiber chirped Bragg grating output ...

    A TDMA MIMO SAR radar for automated position-keeping

    Wang, Zhonghai / Lin, Xingping / Cumber, Steven et al. | SPIE | 2015
    0.5 is the antenna element’s 3dB beamwidth). The transmitter transmits a chirped linear frequency modulated continuous wave (LFMCW) signal ...

    Fiber optic position transducers for aircraft controls

    Glomb, Walter L. | SPIE | 1991
    . These include digital optical code plates, analog optical code plates, chirped diffraction gratings, macrobend loss coils, polarizers ...