Search Results - "Kartaloǧlu, Tolga"
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1
A Direct Detection Fiber Optic Distributed Acoustic Sensor With a Mean SNR of 7.3 dB at 102.7 km
Published in IEEE photonics journal (01-12-2019)“…In this work, we present the experimental results of a direct detection π-OTDR based distributed acoustic sensor system. The system uses two cascaded…”
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Journal Article -
2
Femtosecond self-doubling optical parametric oscillator based on KTiOAsO4
Published in IEEE journal of quantum electronics (2003)“…We report a femtosecond intracavity-frequency-doubled optical parametric oscillator that employs a single KTiOAsO4 crystal for both parametric generation and…”
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Journal Article -
3
Long-Range Distributed Acoustic Sensor Based on 3×3 Coupler Assisted Passive Demodulation Scheme
Published in 2022 Conference on Lasers and Electro-Optics (CLEO) (01-05-2022)“…A distributed acoustic sensor based on phase-sensitive optical time domain reflectometry (φ-OTDR) and passive 3x3 coupler demodulation is demonstrated which is…”
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Conference Proceeding -
4
High-speed InSb photodetectors on GaAs for mid-IR applications
Published in IEEE journal of selected topics in quantum electronics (01-07-2004)“…We report p-i-n type InSb-based high-speed photodetectors grown on GaAs substrate. Electrical and optical properties of photodetectors with active areas…”
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Journal Article -
5
High-speed GaAs-based resonant-cavity-enhanced 1.3 μm photodetector
Published in Applied physics letters (11-12-2000)“…We report GaAs-based high-speed, resonant-cavity-enhanced, Schottky barrier internal photoemission photodiodes operating at 1.3 μm. The devices were fabricated…”
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Journal Article -
6
High-speed solar-blind photodetectors with indium-tin-oxide Schottky contacts
Published in Applied physics letters (07-04-2003)“…We report AlGaN/GaN-based high-speed solar-blind photodetectors with indium-tin-oxide Schottky contacts. Current–voltage, spectral responsivity, and…”
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Journal Article -
7
High-speed visible-blind GaN-based indium–tin–oxide Schottky photodiodes
Published in Applied physics letters (22-10-2001)“…We have fabricated GaN-based high-speed ultraviolet Schottky photodiodes using indium–tin–oxide (ITO) Schottky contacts. Before device fabrication, the optical…”
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Journal Article -
8
Distributed Strain Sensing by Frequency-Selective Fading in Phase-OTDR
Published in 2024 Conference on Lasers and Electro-Optics (CLEO) (05-05-2024)“…We demonstrate a novel approach using frequency-selective fading in phase-OTDR systems to measure dynamic strain on a fiber optic cable. We present the…”
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Conference Proceeding -
9
Long Range Single Pulse Raman Distributed Temperature Sensor Using Standard Single Mode Fiber
Published in 2022 Conference on Lasers and Electro-Optics (CLEO) (01-05-2022)“…We present a single pulse Raman distributed temperature sensor using standard single mode fiber and having ~5.2 m spatial resolution at 18.5 km sensing…”
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Conference Proceeding -
10
The Investigation of Rayleigh Backscattered Signal Statistics in a φ-OTDR System Incorporating Optical Pre-Amplifier
Published in 2020 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR) (01-08-2020)“…We theoretically model and experimentally demonstrate the photon statistics of Rayleigh backscattered signal in a ϕ-OTDR based distributed fiber optical sensor…”
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Conference Proceeding -
11
A Simple Method for Enhancing the SNR in Direct Detection φ-OTDR based Distributed Acoustic Sensors
Published in 2020 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR) (01-08-2020)“…A simple and effective method for increasing the SNR and range in φ-OTDR based direct-detection distributed acoustic sensors is proposed and experimentally…”
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Conference Proceeding -
12
94.8 Km-Range Direct Detection Fiber Optic Distributed Acoustic Sensor
Published in 2019 Conference on Lasers and Electro-Optics (CLEO) (01-05-2019)“…This work demonstrates an ultra-long range direct detection fiber optic distributed acoustic sensor which can detect vibrations at a distance of 94.8 km with…”
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Conference Proceeding -
13
Laser Wavelength Upconversion with Optical Parametric Oscillators Using Simultaneously Phase-Matched Crystals
Published 01-01-2002“…In this thesis, we present our work on optical parametric oscillators that employ a single nonlinear crystal that is simultaneously-phase-matched for…”
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Dissertation -
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Femtosecond Optical Parametric Oscillators Based on Potassium Titanyl Phosphate Crystals
Published 01-01-1996“…In this thesis, we describe our experiments to construct and characterize optical parametric oscillators (OPO) based on a potassium titanyl phosphate (KTP)…”
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Dissertation