J. Hankey

Publications (6)4.9 Total impact

• Article: Low noise fibre optic receiver operating from 2 to 20 GHz

  J. Hankey, G.M. Foster, S.J. Borley, R.H. Wallis, S.J. Holmes
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  ABSTRACT: A wideband optical receiver has been designed and fabricated. The gain with respect to 50 Ω is 12 dB from 2 to 20 GHz, and the noise spectral density is a maximum of 10 pA/√Hz between 6 and 18 GHz. The noise, gain and flatness performances of this GaAs MMIC-based receiver match the equivalent achieved experimentally using highly optimised discrete components, but using a manufacturable process
  Electronics Letters 06/1995; · 0.96 Impact Factor
• Article: Balanced polarisation diversity receiver using hybrid assembly techniques for optical coherent multichannel systems

  J. Hankey, J. Urquhart, A.J. Moseley, C. Edge, M.J. Wale, M. Owen, S.J. Pike
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  ABSTRACT: The first use of hybrid assembly techniques for a balanced polarisation diversity receiver for optical coherent multichannel systems is reported. The design, construction and performance of a lithium niobate polarisation diversity chip with an InP four photodetector array and a GaAs MESFET amplifier are described.
  Electronics Letters 11/1991; · 0.96 Impact Factor
• Article: Field demonstration of coherent FSK system with 60 dB optical power budget

  C.A. Park, S.J. Borley, J. Hankey, B.T. Debney, S.R. Ascham, S.J. Marsh, A.M. Thorley
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  ABSTRACT: The design and performance of a rack mounted 167 Mbit/s coherent optical FSK system with an unrepeatered power budget of 59.7 dB is reported. For the first time a liquid crystal polarisation controller has been used in a coherent system field demonstration. Automatic start-up procedures are described.
  Electronics Letters 05/1991; · 0.96 Impact Factor
• Article: Cheating following success and failure in heavy and moderate social drinkers.

  K J Corcoran, J Hankey
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  ABSTRACT: Two groups of American undergraduates (moderate and heavy social drinkers) completed a matrix task and received either positive or negative feedback on their performance. Following this they were given a maze task, which was designed so that cheating could be detected. Heavy drinkers cheated more than moderate drinkers under success conditions (positive feedback). Heavy drinkers who received positive feedback also cheated more than heavy drinkers who received negative feedback. The results are interpreted in terms of self-handicapping theory.
  The Journal of General Psychology 08/1989; 116(3):311-6. · 1.04 Impact Factor
• Article: Bidirectional fibre-optic link using reflective modulation

  P.J. Duthie, M.J. Wale, I. Bennion, J. Hankey
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  ABSTRACT: A new technique for simultaneous bidirectional data transmission on a single monomode fibre is described. The link is implemented by employing a single light source at one end of the fibre and a reflective modulator at the other. Simultaneous transmission of 565 Mbit/s and 34 Mbit/s signals is reported with BER < 10-9 in each case.
  Electronics Letters 02/1986; · 0.96 Impact Factor
• Source

  Available from: unibo.it

  Article: A wideband low noise GaAs hybrid optical receiver for a coherent fibre optic communication system

  S.J. Pike, J. Hankey
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  ABSTRACT: A low noise GaAs hybrid front-end amplifier suitable for coherent optical links is described. The microwave characterisation and modelling of a low capacitance PIN photodiode is used in the design of a high impedance (integrating) receiver. A 5 GHz bandwidth, transimpedance gain of 430Ohm and an equivalent input noise current spectral density of 6 pA/VHz at the IF frequency of 1.2GHz is achieved.