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Sergei I. Kablukov - One of the best experts on this subject based on the ideXlab platform.

  • all fiber brillouin Optical Spectrum Analyzer based on self sweeping fiber laser
    Optics Express, 2017
    Co-Authors: Yu. A. Tkachenko, Ivan A Lobach, Sergei I. Kablukov
    Abstract:

    We proposed and demonstrated an all-fiber scheme for Optical Spectrum measurement based on stimulated Brillouin scattering and frequency self-sweeping laser without external driver and frequency tunable elements. The resolution and measuring range of proposed Analyzer is measured to be 23 MHz and 5 THz respectively. The ways for improvement of the device characteristics are discussed.

  • Brillouin Optical Spectrum Analyzer with modulated pump
    2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO Europe-EQEC), 2017
    Co-Authors: A. Yu. Tkachenko, Ivan A Lobach, Sergei I. Kablukov
    Abstract:

    Optical Spectrum is one of the most important characteristics of a laser radiation. Many spectral techniques are proposed and developed for spectral measurement, which are based on diffraction gratings, heterodyne or stimulated Brillouin scattering (SBS) amplification. For the last one, the signal radiation is amplified via SBS when frequency difference between pump wave and signal under test corresponds to Brillouin shift in a fiber (∼10 GHz) within the bandwidth of the Brillouin gain window (∼20 MHz) [1]. A Spectrum under test can be reconstructed through scanning of the pump wave frequency. One should note that unamplified signal components being outside the SBS gain window propagate to the output with amplified components and thereby can deteriorate the dynamic range in the Optical Spectrum Analyzer (OSA). This fact complicates the detection a weak spectral component in the presence of stronger one at a closely spaced frequency. To suppress the influence of unamplified signal the technique of polarization pulling is can be applied [2]. In this case, the specific polarization state matching is used. In the present paper, another way of separation of amplified and unamplified signals is proposed. We suggest to modulate intensity of tunable pump radiation similarly to lock-in detection.

  • Brillouin Optical Spectrum Analyzer based on self-sweeping fiber laser
    2017 Progress In Electromagnetics Research Symposium - Spring (PIERS), 2017
    Co-Authors: Yu. A. Tkachenko, Ivan A Lobach, Sergei I. Kablukov
    Abstract:

    We proposed and demonstrated a simple scheme for measurement Optical Spectrum based on stimulated Brillouin scattering and self-sweeping laser without external driver and tunable elements. The resolution and measuring range of proposed Analyzer is measured as 20 MHz and 5 THz respectively. The ways of improvement the characteristics of device are discussed.

H Tsuda - One of the best experts on this subject based on the ideXlab platform.

  • Optical Spectrum Analyzer based on arrayed waveguide grating for high-speed Optical communication systems
    IEEE Photonics Technology Letters, 2005
    Co-Authors: Y. Tanaka, T Kurokawa, K. Aizawa, Y. Itoh, H Tsuda
    Abstract:

    An Optical Spectrum Analyzer for high-speed Optical communication systems was developed using a specially fabricated arrayed waveguide grating with a curved surface micromirror output and a linear image sensor. The resolution and dynamic range were investigated theoretically and experimentally, considering the magnification of the imaging system and the characteristics of the image sensor. A Spectrum of continuous-wave light from 1543.0 to 1573 nm was successfully observed. Spectra of 8-ps short Optical pulses from a mode-locked laser diode operating at 1.5 μm were also successfully observed with a maximum resolution of 15 GHz for 15-fold magnification.

  • Optical Spectrum Analyzer for Optical short pulses using arrayed waveguide grating
    CLEO Pacific Rim 2003. The 5th Pacific Rim Conference on Lasers and Electro-Optics (IEEE Cat. No.03TH8671), 2003
    Co-Authors: Y. Itoh, H Tsuda, K. Aizawa, Y. Tanaka, T Kurokawa
    Abstract:

    We propose a novel method for measuring short-Optical-pulse spectra based on a time-space conversion using an arrayed waveguide grating. Spectra of 8 ps and 670 fs laser pulse were successfully observed with a resolution of 15 GHz.

Yu. A. Tkachenko - One of the best experts on this subject based on the ideXlab platform.

J. Demarco - One of the best experts on this subject based on the ideXlab platform.

  • Planar waveguide Optical Spectrum Analyzer using a UV-induced grating
    IEEE Journal of Selected Topics in Quantum Electronics, 1998
    Co-Authors: C.k. Madsen, T.a. Strasser, J. Wagener, D. Muehlner, M.a. Milbrodt, E.j. Laskowski, J. Demarco
    Abstract:

    An Optical Spectrum Analyzer is demonstrated using a UV-induced, chirped grating on a planar waveguide and a linear detector array. The grating provides both the dispersion with respect to wavelength and the imaging function. The spectral response has a full-width at half-maximum of 0.15 nm and a bandwidth of 7.8 nm. A chirp of -1.75 nm/cm and a 12-cm focal length were used. The design parameters are discussed in terms of the chirp, focal length and resolution. The wavelength dependence of the optimal chirp limits the resolution for small focal lengths. For longer focal lengths, the spotsize is diffraction limited and high resolution can be achieved with minimal fabrication complexity.

  • Fiber grating Optical Spectrum Analyzer tap
    Integrated Optics and Optical Fibre Communications 11th International Conference on and 23rd European Conference on Optical Communications (Conf. Publ, 1997
    Co-Authors: J.l. Wagener, T.a. Strasser, J. Demarco, J.r. Pedrazzani, D. Digiovanni
    Abstract:

    We demonstrate the first Optical Spectrum Analyzer using a blazed and chirped fiber Bragg grating as the only wavelength dispersive element. A detector array demonstrates 14 nm bandwidth, 0.12 nm resolution, 35 dB dynamic range, and insertion loss less than 1 dB.

Y. Tanaka - One of the best experts on this subject based on the ideXlab platform.

  • Optical Spectrum Analyzer based on arrayed waveguide grating for high-speed Optical communication systems
    IEEE Photonics Technology Letters, 2005
    Co-Authors: Y. Tanaka, T Kurokawa, K. Aizawa, Y. Itoh, H Tsuda
    Abstract:

    An Optical Spectrum Analyzer for high-speed Optical communication systems was developed using a specially fabricated arrayed waveguide grating with a curved surface micromirror output and a linear image sensor. The resolution and dynamic range were investigated theoretically and experimentally, considering the magnification of the imaging system and the characteristics of the image sensor. A Spectrum of continuous-wave light from 1543.0 to 1573 nm was successfully observed. Spectra of 8-ps short Optical pulses from a mode-locked laser diode operating at 1.5 μm were also successfully observed with a maximum resolution of 15 GHz for 15-fold magnification.

  • Optical Spectrum Analyzer for Optical short pulses using arrayed waveguide grating
    CLEO Pacific Rim 2003. The 5th Pacific Rim Conference on Lasers and Electro-Optics (IEEE Cat. No.03TH8671), 2003
    Co-Authors: Y. Itoh, H Tsuda, K. Aizawa, Y. Tanaka, T Kurokawa
    Abstract:

    We propose a novel method for measuring short-Optical-pulse spectra based on a time-space conversion using an arrayed waveguide grating. Spectra of 8 ps and 670 fs laser pulse were successfully observed with a resolution of 15 GHz.