666 citations · 858 across the 8 of their papers we have counts for
9 papers
Compressive optical imaging with a photonic lantern
Debaditya Choudhury, Duncan K. McNicholl, Audrey RepettI +4
The thin and flexible nature of optical fibres often makes them the ideal technology to view biological processes in-vivo, but current microendoscopic approaches are limited in spa…
High fidelity fibre-based physiological sensing deep in tissue
Tushar R. Choudhary, Michael G. Tanner, Alicia Megia-Fernandez +13
Physiological sensing deep in tissue, remains a clinical challenge. Here a flexible miniaturised sensing optrode providing a platform to perform minimally invasive in vivo in situ…
Modal noise characterisation of a hybrid reformatter
Izabela Spaleniak, David G. MacLachlan, Itandehui Gris-Sánchez +6
This paper reports on the modal noise characterisation of a hybrid reformatter. The device consists of a multicore-fibre photonic lantern and an ultrafast laser-inscribed slit refo…
Efficient photonic reformatting of celestial light for diffraction-limited spectroscopy
David G. MacLachlan, Robert J. Harris, Itandehui Gris-Sánchez +9
The spectral resolution of a dispersive astronomical spectrograph is limited by the trade-off between throughput and the width of the entrance slit. Photonic guided-wave transition…
Development of integrated mode reformatting components for diffraction-limited spectroscopy
D. G. MacLachlan, R. J. Harris, D. Choudhury +5
We present the results of our work on developing fully integrated devices (photonic dicers) for reformatting multimode light to a diffraction limited pseudo-slit. These devices can…
Modulation-assisted tunneling in laser-fabricated photonic Wannier-Stark ladders
Sebabrata Mukherjee, Alexander Spracklen, Debaditya Choudhury +4
We observe Wannier-Stark localization in curved photonic lattices, realized using arrays of evanescently coupled optical waveguides. By correctly tuning the strength of inter-site…
Observation of a localized flat-band state in a photonic Lieb lattice
Sebabrata Mukherjee, Alexander Spracklen, Debaditya Choudhury +4
We show experimentally how a non-diffracting state can be excited in a photonic Lieb lattice. This lattice supports three energy bands, including a perfectly flat middle band, whic…
Ultrafast laser inscription of mid-IR directional couplers for stellar interferometry
Alexander Arriola, Sebabrata Mukherjee, Debaditya Choudhury +2
We report the ultrafast laser fabrication and mid-IR characterization (3.39 microns) of four-port evanescent field directional couplers. The couplers were fabricated in a commercia…
Photonic spatial reformatting of stellar light for diffraction-limited spectroscopy
Robert J. Harris, David G. MacLachlan, Debaditya Choudhury +6
The spectral resolution of a dispersive spectrograph is dependent on the width of the entrance slit. This means that astronomical spectrographs trade-off throughput with spectral r…