Results 11 to 20 of about 148,804 (200)
Fiber Optic Sensors for Harsh and High Radiation Environments in Aerospace Applications
Sensors, 2023 In the upcoming space revolutions aiming at the implementation of automated, smart, and self-aware crewless vehicles and reusable spacecraft, sensors play a significant role in the control systems.
Alberto Rovera +5 more
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Active and Passive Electronic Components, 2002 In this paper a MMIC QPSK modulator is described. The bit rate of the baseband signal is 155 Mbits/sec, while the frequency of the carrier is fLO=10 GHz . The modulation is performed directly at the RF band and therefore an IF stage is not necessary. The
Petros S. Tsenes +3 more
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Rare Earth Doped Optical Fibers with Multi-section Core
iScience, 2019 Summary: The gain bandwidth of a single-mode fiber is limited by the atomic transitions of one rare earth gain element. Here we overcome this long-standing challenge by designing a new single-mode fiber with multi-section core, where each section is ...
Chongyuan Huang +7 more
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Active and Passive Electronic Components, 2002 In this paper two active MMIC mixers for RF front-end applications are described. A down-converter that converts an RF signal (fRF=10.45 GHz) into an IF signal (fIF=0.95 GHz) using an LO signal (fLO=9.5 GHz) and an up-converter that performs the ...
Ptros S. Tsenes +2 more
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Special Issue on Advances in Dielectric Photonic Devices and Systems beyond the Visible
Applied Sciences, 2022 The impressive advances in dielectric photonics, integrated optics, and optical fiber-based systems are paving the way for increasingly challenging applications in wide research areas [...]
Francesco Prudenzano +2 more
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Frontiers in Materials, 2019 In this letter, an Nd3+-doped compound fluorosilicate glass was successfully fabricated with the method of melt-quenching. Under the excitation of a 808 nm laser, enhanced near-infrared photoluminescence emission at the range from 1,065 to 1,140 nm was ...
Xin Wang +6 more
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IEEE Photonics Journal, 2017 We propose a novel chromatic dispersion (CD) estimation method by fractional Fourier transformation of linear-frequency modulation (LFM) signals. This method can measure inband and outband CD without using extra spectrum or timeslot resourses.
Wanli Wang +3 more
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Integrated photonic circuit in silicon on insulator for fourier domain optical coherence tomography [PDF]
, 2010 Optical coherence tomography (OCT) is a medical imaging technology capable of producing high-resolution, cross-sectional images through inhomogeneous samples, such as biological tissue. It has been widely adopted in clinical ophthalmology and a number of
Baets, Roel +3 more
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IEEE Photonics Journal, 2014 By utilizing cross-phase modulation and birefringence, we demonstrated simultaneous polarization-insensitive phase-transmultiplexing and multicasting of a single 10-Gbaud CSRZ-OOK signal and 4 $\times$ 10-Gbaud RZ-BPSK signals to generate 4 $\times$ 10-
B. M. Cannon +5 more
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IEEE Photonics Journal, 2018 We present a novel method to estimate chromatic dispersion with ultra-low sampling rate based on training sequence. The under-sampling can be equivalent to over-sampling by splicing points with periodic sequence.
Yiwen Ma +6 more
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