Time domain add-drop multiplexing scheme enhanced using a saw-tooth pulse shaper.
We experimentally demonstrate the use of saw-tooth optical pulses, which are shaped using a fiber Bragg grating, to achieve robust and high performance time-domain add-drop multiplexing in a scheme based on cross-phase (XPM) modulation in an optical fiber, with subsequent offset filtering. As compared to the use of more conventional pulse shapes, such as Gaussian pulses of a similar pulse width, the purpose-shaped saw-tooth pulses allow higher extinction ratios for the add and drop windows and significant improvements in the receiver sensitivity for the dropped and added channels.
Optoelectronics Research Centre, University of Southampton, Southampton, United Kingdom. frp@orc.soton.ac.uk
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F
Parmigiani
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Petropoulos
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Ibsen
P J
PJ
Almeida
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Ng
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Richardson