Patent ID: 9680596
Date: 2017-06-13
CPC Classifications: H04J

Claim:
1. A method for optical signal transmission comprising: transmitting a first optical signal at a first wavelength by a control system, the first optical signal having a first optical path distance; calculating a length of the first optical path distance that may be traversed by the first optical signal without a guard band; determining a first guard band requirement for the first optical signal by applying a percentage to the first optical path distance, the percentage based on the first optical path distance that may be traversed without a guard band, and the first guard band requirement is further based on a length of a portion of the first optical path that is greater than a threshold length; transmitting a second optical signal by the control system, the second optical signal having a second optical path distance; determining a second guard band requirement for the second optical signal; and placing the second optical signal spectrally adjacent to the first optical signal by selecting a second wavelength, the second wavelength selected to satisfy the first and second guard band requirements.