Results 51 to 60 of about 3,670,840 (396)
IEEE Photonics Journal, 2021 Increasing the threshold of stimulated Brillouin scattering (SBS) by frequency and phase modulation is a productive approach to suppress SBS in optical fiber communications.
Peng Lei +6 more
doaj +1 more source
Free-space optical communication employing subcarrier modulation and spatial diversity in atmospheric turbulence channel [PDF]
, 2008 An expression for the bit error rate of a multiple subcarrier intensity-modulated atmospheric optical communication system employing spatial diversity is derived. Spatial diversity is used to mitigate scintillation caused by atmospheric turbulence, which
Ghassemlooy, Zabih +9 more
core +1 more source
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
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
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
Characterization of frequency drift of sampled-grating DBR laser module under direct modulation [PDF]
, 2008 The authors demonstrate the drift in frequency of a static sampled-grating distributed Bragg reflector (SG DBR) laser module when it is subjected to direct modulation.
Anandarajah, Prince M. +13 more
core +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
Optics Express, 2017 High-speed interconnects in data-center and campus-area networks crucially rely on efficient and technically simple transmission techniques that use intensity modulation and direct detection (IM/DD) to bridge distances of up to a few kilometers.
H. Zwickel +13 more
semanticscholar +1 more source
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
doaj +1 more source
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
doaj +1 more source