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This study deals with photonic crystal fiber designed to have a zero dispersion wavelength, lambda0 close to 715 nm. A picosecond titanium-sapphire laser pumps the fibre to produce single mode pair-photons at 583 nm signal and 900 nm idler wavelength. The pairs can be collected and detected with lumped efficiencies through 10 nm interference filters up to 24% in the signal channel and 14% in the idler...
We demonstrate a bright fibre source of heralded single photons at 1550 nm with detected rates greater than 10 kilocounts per second. Photon generation and separation is performed in spliced fibre components.
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