Results 31 to 40 of about 3,650,514 (342)
Optical direct intensity modulation of a 79GHz resonant tunneling diode-photodetector oscillator.
Optics Express, 2019 We report on the direct intensity modulation characteristics of a high-speed resonant tunneling diode-photodetector (RTD-PD) with an oscillation frequency of 79 GHz.
Weikang Zhang +10 more
semanticscholar +1 more source
Bandlimited Intensity Modulation [PDF]
IEEE Transactions on Communications, 2012 In this paper, the design and analysis of a new bandwidth-efficient signaling method over the bandlimited intensity-modulated direct-detection (IM/DD) channel is presented. The channel can be modeled as a bandlimited channel with nonnegative input and additive white Gaussian noise (AWGN).
Tavan, Mehrnaz +2 more
openaire +2 more sources
56-Gbit/s PAM-4 Optical Signal Transmission Over 100-km SMF Enabled by TCNN Regression Model
IEEE Photonics Journal, 2021 Due to the interaction between chromatic dispersion (CD) and direct detection, the CD induced power-fading effect has been considered as the key point to limit transmission rate and distance in intensity modulation direct-detection (IM/DD) systems.
Jing Zhang +6 more
doaj +1 more source
MIMO free-space optical communication employing subcarrier intensity modulation in atmospheric turbulence channels [PDF]
, 2009 In this paper, we analyse the error performance of transmitter/receiver array free-space optical (FSO) communication system employing binary phase shift keying (BPSK) subcarrier intensity modulation (SIM) in clear but turbulent atmospheric channel ...
E. Leitgeb +12 more
core +1 more source
Photonics, 2023 This research proposes a method for the simultaneous acquisition of the second harmonic (2f) signal of quartz-enhanced photoacoustic spectroscopy (QEPAS) and the first harmonic (1f) signal of quartz-enhanced photothermal spectroscopy (QEPTS) based on the
Hao Liu +5 more
doaj +1 more source
Electronic equalization for advanced modulation formats in dispersion-limited systems [PDF]
, 2004 We investigate in this letter the use of electronic equalization on dispersion limited systems for different modulation formats. Besides analyzing equalization on standard NRZ intensity modulation as a reference, we focus on two advanced modulation ...
Curri, Vittorio +3 more
core +1 more source
Intensity modulated radiation therapy versus volumetric intensity modulated arc therapy [PDF]
Journal of Medical Radiation Sciences, 2013 The advanced developments in external beam radiation therapy (EBRT) over the past few decades have improved dose conformity to the target while minimizing dose to the surrounding organs at risk (OAR). Intensity modulated radiation therapy (IMRT) and volumetric modulated arc therapy (VMAT) are two commonly used EBRT techniques to treat cancer.
openaire +2 more sources
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
IEEE Photonics Journal, 2018 In this paper, we investigate the characteristics of all-optical modulation via thermo-optic effects of an optical microfiber coupler (OMC) and the theoretical analysis and experimental results are shown. The intensity modulation and the phase modulation
Yang Yu +4 more
doaj +1 more source
Novel graphene‐based optical MEMS accelerometer dependent on intensity modulation
ETRI Journal, 2018 This paper proposes a novel graphene‐based optical microelectromechanical systems MEMS accelerometer that is dependent on the intensity modulation and optical properties of graphene.
M. Ahmadian, Kian Jafari, M. Sharifi
semanticscholar +1 more source