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We review progress in the design, fabrication and characterisation of hollow core photonic band gap fibres that have led to the production of low-latency data transmission fibres of >10 km length with 200nm bandwidth and losses at the 5dB/km level.
We report the fabrication of a record 11km length of photonic bandgap fiber supporting >200nm bandwidth with longitudinally uniform loss of ≈5dB/km at 1560nm and demonstrate error-free, low-latency, direct-detection 10Gbit/s transmission across the entire C-Band.
An implantable Fabry-Pérot interferometer based pressure sensor is developed. The pressure sensor could be integrated directly onto the inlet shell of a left ventricular assist device (LVAD) to monitor blood pressure in real-time and provide a feedback control signal to achieve the optimal operation of LVAD. The diaphragm of the pressure sensor is made out of biocompatible polymer parylene-C.
We present experimentally a novel technique to generate significant and thermodynamically stable second-order nonlinearity into a silica fiber taper by using nanoscale self-assembly of nonlinear molecules on a fiber surface.
We numerically analyze the nonlinear propagation of femtosecond pulses in nonlinear photonic-crystal fiber (PCF) with anomalous dispersion. The results show efficient spectral compression of chirp-free femtosecond pulses at 1550-nm wavelength is induced in PCF. The compressed spectral width can be controlled by the input pulse power.
We review high power and high energy ultrafast fiber amplifiers. An Yb-fiber chirped pulse amplification system employing cubicon pulses producing sub-650 fs pulses at >100 muJ and >15W is presented.
Recent work in frequency-conversion of pulsed fiber-amplifiers is reviewed. Design criteria of frequency converters for fiber sources in operating the wavelength range between 1 um and 2 um are discussed.
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