Results 31 to 40 of about 816,203 (299)
On Parameter Estimation for Bandlimited Optical Intensity Channels
Computation, 2019 Parameter estimation is of paramount importance in every digital receiver. This is not only true for radio, but also for optical links; otherwise, subsequent processing stages, like detector units or error correction schemes, could not be operated ...
Wilfried Gappmair
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Self-mixing interference effects in tunable diode laser absorption spectroscopy [PDF]
, 2009 We report the effects of self-mixing interference on gas detection using tunable diode laser spectroscopy. For very weak feedback, the laser diode output intensity gains a sinusoidal modulation analogous to that caused by low finesse etalons in the ...
Hodgkinson, Jane +3 more
core +2 more sources
Intensity-Modulated Polymer Optical Fiber-Based Refractive Index Sensor: A Review
Sensors, 2021 The simple and highly sensitive measurement of the refractive index (RI) of liquids is critical for designing the optical instruments and important in biochemical sensing applications.
Chuanxin Teng +6 more
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Applied Sciences, 2020 We consider an integrated electro-absorption modulator within a coupled-cavity VCSEL structure (EAM-VCSEL). We derive expressions for the modulation transfer function (MTF) of the EAM-VCSEL for small-signal modulation of either VCSEL injection current or
Krassimir Panajotov, Richard Schatz
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, 2009 The modulation efficiency, at high-frequency microwave modulation, of a LiNbO3 waveguide electro-optic modulator is shown to be degraded severely, especially when it is used as a frequency translator in a Brillouin-distributed fiber-sensing system.
Liao, Y., Meng, Z., Zhou, H.
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All-Optical Modulation Characteristics of a Microfiber Coupler Combined Sagnac Loop
IEEE Photonics Journal, 2019 In this paper, we theoretically and experimentally investigate the all-optical modulation characteristics of a microfiber coupler combined Sagnac loop (MCSL).
Yang Yu +5 more
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Analysis and Experimental Study of a Silicon Photonic Single MRM-Assisted MZI PAM-4 Modulator
IEEE Photonics Journal, 2017 We report on the analysis and experimental study of a silicon photonic single microring modulator (MRM) assisted Mach–Zehnder interferometer for high-speed four-level pulse amplitude modulation (PAM-4).
Rui Li +7 more
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Photonics, 2023 The nonlinear Volterra equalizer has been proved to be able to solve the problem of nonlinear distortion, but it has high computational complexity and is difficult to implement.
Zhongshuai Feng +7 more
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Intensity-modulated radiotherapy - what is it? [PDF]
Cancer Imaging, 2004 Intensity-modulated radiotherapy (IMRT) is one of the most important recent developments in oncology. It enables precise conformation of the radiation dose to the target volume. It has the potential to significantly reduce long-term morbidity and improve local control.
Taylor, A, Powell, M E B
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D-Shaped POF Sensors for Refractive Index Sensing—The Importance of Surface Roughness
Sensors, 2019 In this study the influence of the surface roughness on the transmission capacities of D-shaped plastic optical fibers (POFs) and sensors performance was investigated. Five D-shaped POF sensors were produced and characterized for refractive index sensing
Filipa Sequeira +5 more
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