Extended range for CWDM optical transport

摘要

A optical transmission system includes light sources generating light of at least two wavelengths, where any two adjacent wavelengths are separated by less than 10 nm. The wavelengths fall within the zero dispersion zone of an optical fiber, and may be shifted by 1 nm or less to reduce crosstalk effects.

主权项

1. A optical transmission system comprising:
light sources each generating light within a range of wavelengths, a controller for receiving the light generated by at least two of the light sources and setting a specific wavelength to each generated light such that any two adjacent wavelengths are separated by between 3 nm and 10 nm, wherein the wavelengths fall within the zero dispersion zone of an optical fiber; a crosstalk detector for detecting communication crosstalk between wavelengths; and a wavelength shifter capable of, in response to a detection of crosstalk by the crosstalk detector, wavelength shifter configured shift one or more of the wavelengths of light having the specific wavelength set by the controller by 1 nm or less to prevent the one or more wavelengths from occupying the zero dispersion wavelength of the optical fiber.