Cryan, R.A., Unwin, Rodney T., Garrett, Ian, Sibley, Martin J.N. and Calvert, N.M. (1990) Optical fibre digital pulse-position-modulation assuming a Gaussian received pulse shape. IEE Proceedings - Optoelectronics, 137 (2). pp. 89-96. ISSN 0267-3932

The abundance in bandwidth available in the best monomode fibres may be exchanged for improved receiver sensitivity by employing digital PPM. The paper presents a performance and optimisation analysis for a digital PPM coding scheme operating over a fibre channel employing a PIN-BJT receiver and assuming a Gaussian received pulse shape. The authors present original results for a 50 Mbit/s, 1.3 μm wavelength digital PPM system and conclude that, provided the fibre bandwidth is several times that of the data rate, digital PPM can outperform commercially available PIN-BJT binary PCM systems

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