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Suppression of Sidelobe for Acousto-Optic Tunable Filter in Near... In this paper we calculated the acoustic intensity distribution of different transducers, and designed acousto-optic tunable filter(AOTF) based on different transducers. Through the experiment, we find sidelobe can be reduced by changing the transducer ...
Composite-Light-Source Interferometer for Real-Time Micro-Vibrat... A novel interferometer using a composite light source for real time measurements of micro-vibrations is proposed. The experimental results make it clear that it is insensitive to external disturbances and intensity fluctuations of the source light.
Noise Effects in the Mode-Locked External Cavity Lasers Effect of high level of spontaneous and carrier noise on mode-locked hybrid soliton pulse source and relative intensity noise is described. Transform limited pulses are not generated over a wide frequency range because of these noises.
The Effect of Lateral Guiding Mechanism on Noise Characteristics... A comparison between intensity noise spectra and also the line shapes of gain-guided, weakly-index-guided, and strongly-index-guided semiconductor lasers are made using numerical solution of Maxwell-Bloch equations including spontaneous emission noise.
Analysis of MPN, MHN and Phase Noise of a Two-Mode Semiconductor... Intensity noise including Mode Partition Noise (MPN) and Mode Hopping Noise (MHN), and Phase/Frequency Noise Spectrum (FNS) are calculated for a two-mode semiconductor laser. RIN is derived considering of MPN and MHN effect.
Research of Asymmetric Y-Branching Total Internal Reflection All... Y-branch ing TIR all-optical switch have been fabricated. When the switching optical intensity is 149.9W/mm2, the extinction ratio is 18dB. A theoretical model was also proposed which provided a good fit to the experimental data.
Yb Emission spectra and fluorescence lifetime of Er’ in Yb3^/Er3 -codoped tungsten-tellurite glasses were measured. Effects of Yb、’ concentration on 1.5pm emission intensity and bandwidth of Erv were investigated and a FWHM of 81 nm was demonstrated.
Use of cross-relaxation for temperature sensing via a fluorescen... ... an alternative mechanism for temperature sensing via a fluorescence intensity ratio (FIR) is proposed. The rate of energy transfer ... is temperature dependent, and as such exhibits a changing intensity ratio in the emission spectrum. Here a phosphor YBO3: ...
Experimental demonstration for 40-km f iber and 2-m wireless tra... ... our knowledge, this is for the first time in China to realize optical wireless link at 100 GHz. In this letter, simple intensity modulator with direct detector (IM-DD) modulation is employed and optical power penalty after 40-km single mode fiber (SMF)-28 ...
Improved illumination for vision-based defect inspection of high... ... for defect inspection. A diffuse light source is designed based on the physics analysis of light reflection. The distribution of intensity is simulated according to a known model to verify the illumination uniformity of the source. Experiments show that ...

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