Optical path feasibility in an optical communication network

Details Optical path feasibility in an optical communication network Optical path feasibility in an optical communication network

2005-05-31

2009-12-15

Doan, Jennifer (Department: 2874)

Optical waveguides

Miscellaneous

C385S015000, C385S024000, C398S009000, C398S025000, C398S028000, C398S029000

Reexamination Certificate

active

07634167

ABSTRACT:
A method of assessing the feasibility of a composite optical path in an optical communications network in which the composite path is composed of two optical paths k1and k2is described. The method comprising the steps of defining, for each individual optical path k and with type i interface, at least one parameter indicating its feasibility, calculating a quality Q factor Q′_i,k1+k2of the signal for the composite path, estimated considering the deterioration which affects transmission over the paths k1and k2and comparing this quality Q′_i,k1+k2with a value Qbare_i which is defined as the lowest value which can be taken on by a mapping function Q_i(.) for interface i and which gives the Q factor as a function of the OSNR received evaluated under the conditions that are considered to be the worst case that can be accepted while ensuring the desired signal quality.

REFERENCES:
patent: 5598403 (1997-01-01), Tatsuki
patent: 6219161 (2001-04-01), Chang et al.
patent: 2002/0097460 (2002-07-01), Ikoma et al.
patent: 1237392 (2002-09-01), None

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