4 papers
Sub-nanosecond all-optically reconfigurable photonics in optical fibres
Kunhao Ji, David J. Richardson, Stefan Wabnitz +1
We introduce a novel all-optical platform in multimode and multicore fibres. By using a low-power probe beam and a high-power counter-propagating control beam, we achieve advanced…
Double Clad Antiresonant Hollow Core Fiber and Its Comparison with other Fibres for Multiphoton Micro-Endoscopy
Marzanna Szwaj, Ian A Davidson, Peter B Johnson +10
In this work, we study a new hollow-core (air-filled) double-clad anti-resonant fiber (DC-ARF) as a potent candidate for multiphoton micro-endoscopy. We compare the fiber character…
Mode attraction, rejection and control in nonlinear multimode optics
Kunhao Ji, Ian Davidson, Jayantha Sahu +3
Novel fundamental notions helping in the interpretation of the complex dynamics of nonlinear systems are essential to our understanding and ability to exploit them. In this work we…
Alternative approaches for analysing repeated measures data that are missing not at random
Oliver Dukes, David Richardson, Eric Tchetgen Tchetgen
We consider studies where multiple measures on an outcome variable are collected over time, but some subjects drop out before the end of follow up. Analyses of such data often proc…