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Open AccessJournal ArticleDOI

High resolution light intensity spectrum analyzer (LISA) based on Brillouin optical filter.

Carlos Heras, +3 more
- 02 Apr 2007 - 
- Vol. 15, Iss: 7, pp 3708-3714
TLDR
A high-resolution light intensity spectrum analyzer technique to derive the RF modulation spectrum of optical signals is presented and experimentally confirmed.
Abstract
A high-resolution light intensity spectrum analyzer technique to derive the RF modulation spectrum of optical signals is presented and experimentally confirmed. It uses the XPM nonlinear effect in a dispersion shifted fiber to obtain the light intensity spectrum, and a Brillouin optical filtering method to implement the high resolution spectrometric analysis. Measured RF spectra of PRBS modulated optical signals at 2.5 Gb/s and 10 Gb/s are presented and compared with their corresponding ones obtained in the electrical detection domain to confirm the capabilities of the method. Influence of fiber electrostriction effect is measured and analyzed.

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Citations
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Journal ArticleDOI

Enhanced directional excitation and emission of single emitters by a nano-optical Yagi-Uda antenna.

TL;DR: 3D numerical calculations demonstrate that the interaction of a single quantum emitter with the electromagnetic field is both enhanced and directed by a nano-optical Yagi-Uda antenna, making such antennas a promising candidate for compact easy-to-address planar sensors.
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Optical properties of superconducting nanowire single-photon detectors.

TL;DR: In this article, the authors measured the optical absorptance of superconducting nanowire single photon detectors and found that 200-nm-pitch, 50-fill-factor devices had an average absorption of 21% for normally-incident front-illumination of 1.55-µm-wavelength light polarized parallel to the nanowires, and only 10% for perpendicularly-polarized light.
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Nanofibers drawing and nanodevices assembly in poly(trimethylene terephthalate).

TL;DR: The results suggest that the PTT nanophotonic fibers/wires would be promising candidates in constructing miniaturized photonic devices and ultracompact photonic integrated circuits (PICs), and a one-step drawing as an alternative to the standard optical bench technique.
Journal ArticleDOI

Optical Properties of Superconducting Nanowire Single-Photon Detectors

TL;DR: It is found that, remarkably, absorbed parallel-polarized photons were more likely to result in detection events than perpendicular-polarsized photons, and a hypothesis is presented that qualitatively explains this result.
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A Yb3+/Tm3+/Ho3+ triply-doped tellurite fibre laser.

TL;DR: Continuous wave laser emission at 2.1 microm from a Yb( 3+)/Tm(3+)/Ho(3+) triply-doped tellurite fibre laser is reported, corresponding to 22% optical-to-optical efficiency.
References
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Journal ArticleDOI

RF spectrum analysis of optical signals using nonlinear optics

TL;DR: In this paper, a nonlinear interaction of the source under test with a quasimonochromatic source followed by an optical spectrum measurement has been proposed to measure the radiofrequency spectrum of an optical signal based on nonlinear optics.
Journal ArticleDOI

Very high resolution optical spectrometry by stimulated Brillouin scattering

TL;DR: In this article, the authors demonstrate very high-resolution optical spectrometry based on stimulated Brillouin scattering between a swept-tuned laser and a test optical signal, along with spectral measurements of unmodulated and modulated optical sources showing 0.08-pm resolution and 80dB dynamic range.
Journal ArticleDOI

Electrostrictive contribution to the intensity-dependent refractive index of optical fibers.

TL;DR: It is shown that electrostriction contributes significantly to self-action effects in optical fibers, adding 19% to the nonlinear refractive index for fields that vary slowly compared with the ~1-ns time scale of the acoustic response.
Journal ArticleDOI

Spectrum of externally modulated optical signals

TL;DR: In this article, the optical power spectrum of a signal externally modulated using a Mach-Zehnder modulator is calculated analytically for binary signals for which the drive signal has either raised-cosine or Bessel-filtered pulse shape as well as for duobinary signals created by Bessel filtering.
Journal ArticleDOI

Effects of polarization-mode dispersion on cross-phase modulation in dispersion-managed wavelength-division-multiplexed systems

TL;DR: In this article, a vector theory of cross-phase modulation (XPM) in optical fibers was developed to investigate the impact of polarization-mode dispersion (PMD) on the crosstalk induced by XPM in wavelength-division multiplexed lightwave systems.
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