Low-loss, 2 km-long photonic crystal fiber with zero GVD in the near IR suitable for picosecond pulse propagation at the 800 nm band

The 2 Km-long hexagonal photonic crystal fiber (PCF) with losses at 1550 and 850 nm of 3.2 and 7.1 dB/km respectively was fabricated. The experiments were performed for ultrashort pulse propagation and soliton compression was also demonstrated by employing the anomalous dispersion in the PCF in the 800 nm band. It was shown that picosecond pulses at the 800 nm band could be transmitted over 2 km through a PCF. The zero GVD wavelength was measured to be 810 nm and picosecond optical pulses at 815 nm were propagated through the fiber.