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Vol 48, No 13, 21 June 2012

  • Masahiro Nada from NTT Photonics Laboratories

    Going the distance

    Long-reach 100 Gbit/s Ethernet could be on the horizon with a new avalanche photodiode receiver.

  • Michael Kelly

    Interview with Michael Kelly

    Professor Michael Kelly from Cambridge University in the UK talks about the research behind his Letter Highly reproducible tunnel currents in MBE-grown semiconductor multilayer.

  • Memristor arrays

    Alternative reading

    Researchers in the US can read memristor array memory using AC techniques to reduce power leakage and power consumption.

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2013 Electronics Letters Premium Award Paper

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Electronic Letters vol 46 issue 1 - cover

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Also in this issue

  • Cross correlation

    Double accuracy

    Researchers in France have presented the first cross-correlation measurements using a two-photon absorption process in a semiconductor for two optical pulses of different wavelengths and durations. The method may provide a simple, clean, reliable and highly integrable multipurpose tool to synchronise beams, measure jitters or perform accurate picosecond pulse measurements.

  • Tunable resonator

    Body tuning

    A tunable resonator based on change of substrate permittivity has been fabricated using a new high-performance liquid crystal suitable for body-centric communications by researchers from Australia and Germany. Their results show a frequency tuning range of 8.2% around a centre frequency of 2.8 GHz, with a lower insertion loss compared to standard liquid crystals.

  • Rectifying crystals

    Titanic power

    A MEMS-based lead magnesium niobate-lead titanate (PMN-PT) energy harvester has been proposed by collaborating researchers in China and Japan. Compared with a conventional piezoelectric material, the PMN-PT single crystal has a higher coupling coefficient and electromechanical coefficient, which can improve the conversion efficiency of the implemented power generating device.

  • Laboratory photograph

    Key cutting

    A demonstration that the Goldberg–Vaidman GV95 quantum key distribution (QKD) protocol is feasible over 1 km long optical fibres is reported in work from Brazil and Chile. With inferred quantum BER comparable to many other QKD setups, the work also suggests it should be possible to extend the range to a dozen kilometres by employing a faster piezoelectric actuator.

  • Near-field images of fundamental frequency intensity

    Matchmaker

    Researchers in Italy report broadband second harmonic generation between 930 and 970 nm using random quasi-phase matching (QPM) in a planar waveguide fabricated by soft proton exchange in congruent lithium tantalate. Compared to bulk samples, the guided-wave frequency doubler in random QPM is highly broadband and more efficient, owing to the confined nature of the interacting waves and to spectral phase matching twice as densely populated.

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Cover of Electronics Letters, volume 50, issue 25

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