Fig. 1: Schematic of the experimental set-up.
From: Long-range optical trapping and binding of microparticles in hollow-core photonic crystal fibre
SMF, single mode fibre; HWP, half-wave plate; PBS, polarising beam splitter; MO, microscope objective; PD, photodiode; MS, microscope system; PSD, position-sensing diode; PID, proportional-integral-differential controller; EOM, electro-optical modulator; P, polarizer. Inset: scanning electron micrograph of the HC-PCF
