46 citations · 80 across the 7 of their papers we have counts for
7 papers
Geometric scaling limits of phase-only control in multimode coherent systems
Harikumar K Chandrasekharan
Control of coherent waves is often restricted to phase-only actuation in multimode systems, yet the resulting physical limits remain poorly understood. Here, we show that restricti…
Polarization-independent deterministic mode localization in a photonic lantern
Harikumar K Chandrasekharan, Ross Donaldson
Coherent interference in multimode photonic systems underpins scalable, high-fidelity control for beam shaping, power delivery, and signal processing, yet most existing approaches…
Resolving polarization-dependent mode dynamics in multimode fibers with 2D single-photon detector arrays
Harikumar K. Chandrasekharan, Ross Donaldson
Monitoring polarization dynamics in multimode fibers is critical for a range of applications, spanning from optical communication to sensing. Although the modal behavior of multimo…
In-situ multicore fibre-based pH mapping through obstacles in integrated microfluidic devices
Harikumar K. Chandrasekharan, Krystian L. Wlodarczyk, William N. MacPherson +1
Microfluidic systems with integrated sensors are ideal platforms to study and emulate processes such as complex multiphase flow and reactive transport in porous media, numerical mo…
High resolution TCSPC imaging of diffuse light with a one-dimensional SPAD array scanning system
E. P. McShane, H. K. Chandrasekharan, A. Kufcsák +6
We report a time-resolved single photon counting (TCSPC) imaging system based on a line-scanning architecture. The system benefits from the high fill-factor, active area, and large…
State-recycling and time-resolved imaging in topological photonic lattices
Sebabrata Mukherjee, Harikumar K. Chandrasekharan, Patrik Öhberg +2
Photonic lattices - arrays of optical waveguides - are powerful platforms for simulating a range of phenomena, including topological phases. While probing dynamics is possible in t…
Multiplexed Single-Mode Wavelength-to-Time Mapping of Multimode Light
Harikumar K. Chandrasekharan, Frauke Izdebski, Itandehui Gris-Sánchez +8
We demonstrate that photonic lanterns based on tapered multicore fibres provide an efficient way to couple multimode states of light to a two-dimensional array of Single-Photon Ava…