Comments on: Difference in the shape of an input pulse and output pulse in an optic fibre.? http://www.thepulsartriyo.com/pulse-power/difference-in-the-shape-of-an-input-pulse-and-output-pulse-in-an-optic-fibre Tue, 13 Jul 2010 04:04:59 -0400 http://wordpress.org/?v=2.8.4 hourly 1 By: Tipper Bore http://www.thepulsartriyo.com/pulse-power/difference-in-the-shape-of-an-input-pulse-and-output-pulse-in-an-optic-fibre/comment-page-1#comment-2410 Tipper Bore Mon, 16 Nov 2009 08:18:59 +0000 http://www.thepulsartriyo.com/pulse-power/difference-in-the-shape-of-an-input-pulse-and-output-pulse-in-an-optic-fibre#comment-2410 The transmission down the wire involves many reflections off the outer surfaces of the wire - therefore, some of the light energy takes a longer path through the fiber than other light energy - this separation widens the shape of the output pulse. Random variations in angle of bounce tends to widen the pulse - some of the light energy makes a more direct path down the fiber - some of the light energy makes a less direct path down the fiber - the further the pulse travels, the wider the spatial difference between the leading edge of the pulse and the tail end of the pulse. Since the total energy is constant - this must lead to a reduced amplitude - although total energy is more or less constant.<br><b>References : </b><br> The transmission down the wire involves many reflections off the outer surfaces of the wire – therefore, some of the light energy takes a longer path through the fiber than other light energy – this separation widens the shape of the output pulse.

Random variations in angle of bounce tends to widen the pulse – some of the light energy makes a more direct path down the fiber – some of the light energy makes a less direct path down the fiber – the further the pulse travels, the wider the spatial difference between the leading edge of the pulse and the tail end of the pulse.

Since the total energy is constant – this must lead to a reduced amplitude – although total energy is more or less constant.
References :

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