High Dynamic Range Externally Time-Gated Photon Counting Optical Time-Domain Reflectometry
نویسندگان
چکیده
منابع مشابه
Digitally Range-Gated Optical Frequency Domain Reflectometry
Summary: We present a new optical frequency domain reflectometry technique which permits high frequency sweep repetition rates without sacrificing range. This technique could thus be adapted for remote and distributed acoustic sensing over long
متن کامل217 km long distance photon-counting optical time-domain reflectometry based on ultra-low noise up-conversion single photon detector.
We demonstrate a photon-counting optical time-domain reflectometry with 42.19 dB dynamic range using an ultra-low noise up-conversion single photon detector. By employing the long-wave pump technique and a volume Bragg grating, we achieve a noise equivalent power of -139.7 dBm/√Hz for our detector. We perform the OTDR experiments using a fiber of length approximate 217 km, and show that our sys...
متن کاملLong-haul and high-resolution optical time domain reflectometry using superconducting nanowire single-photon detectors
In classical optical time domain reflectometries (OTDRs), for sensing an 200-km-long fiber, the optical pulses launched are as wide as tens of microseconds to get enough signal-to-noise ratio, while it results in a two-point resolution of kilometers. To both reach long sensing distance and sub-kilometer resolution, we demonstrated a long-haul photon-counting OTDR using a superconducting nanowir...
متن کاملPhoton-counting optical coherence-domain reflectometry using superconducting single-photon detectors.
We consider the use of single-photon counting detectors in coherence-domain imaging. Detectors operated in this mode exhibit reduced noise, which leads to increased sensitivity for weak light sources and weakly reflecting samples. In particular, we experimentally demonstrate the possibility of using superconducting single-photon detectors (SSPDs) for optical coherence-domain reflectometry (OCDR...
متن کاملCompact time-gated analog counting SPAD-based pixels for high resolution, single-photon, time-resolved imagers
In this work, three different pixels for time-resolved, single-photon imaging are investigated. The pixels include a Single-Photon Avalanche Diode (SPAD), a gating circuit and an analog counter. The presented structures aim at achieving sub-nanosecond gating performance with a reduced number of transistors to enable high resolution imaging with a high fill factor. The pixels have been implement...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Lightwave Technology
سال: 2019
ISSN: 0733-8724,1558-2213
DOI: 10.1109/jlt.2019.2941997