Uncoupled multi-core fibers (MCFs) are promising transmission media for realizing long-haul and large-capacity transmission using space division multiplexing. When the assignment of the signal tran…
This paper focuses on the spectral manipulation of Brillouin gain in two-mode few-mode fiber (FMF); modal Brillouin interaction is realized by launching a 2nd probe beam. With this technique, we ca…
The mode field diameter (MFD) is an essential parameter for understanding the transmission characteristics of optical fibers. A variable aperture (VA) technique is a standard test method for measur…
To capture vibration waveforms whose frequencies exceed the limitation set by sensing fiber length in Φ–OTDR distributed vibration sensing (DVS), we propose a sampling rate enhancement technique…
Distributed vibration sensing (DVS) utilizes an optical fiber as an array of virtual strain sensors. It can reveal dynamic strain distributions such as seismic events and car traffic, thus giving a…