Abstract
An optical signal-to-noise ratio (OSNR) aware lightpath provisioning
mechanism (OSNR-LPM) is proposed for distributed optical networks. This OSNR-LPM
takes the OSNR value of the lightwave along the lightpath into consideration when
establishing the lightpath for the connection request using resource reservation
protocol-traffic engineering (RSVP-TE). Moreover, the OSNR-LPM makes full advantages
of the OSNR monitoring function in each node and assigns the lightwave by judging
the OSNR value carried by the signaling message in order to guarantee the reliable
establishment of the lightpath in the data plane.The simulation results show that
the OSNR-LPM outperforms other lightpath assignment mechanisms in terms of real
blocking probability in the data plane.
© 2011 Chinese Optics Letters
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