Patent ID: 9191103
Filing Date: 2015-11-17
Classification: H04B

Abstract:
1. A method, in an optical testing node, for establishing transmission parameters for optical communications, the method comprising: transmitting an optical test signal through an optical network; analysing results of the transmitted optical test signal; and adjusting at least one parameter of said optical test signal based on the analysing, wherein said transmitting, analysing and adjusting are performed in an iterative manner, said optical test signal has a modulation scheme, a light path length, and a spectral width, and adjusting at least one parameter based on the analysing comprises adjusting at least one of the following based on the analysing: the modulation scheme, the light path length, and the spectral width of the optical signal, wherein upon analysing the results, if the transmitted optical test signal is not detected due to a low optical signal to noise ratio, the adjusting further comprises: increasing the current light path length; selecting a new modulation scheme, from a sub-set of modulation schemes, such that the new modulation scheme comprises a least amount of spectral efficiency from the sub-set of modulation schemes; and thereafter, assigning the new modulation scheme as the current modulation scheme.