Patent ID: 8625992

Claim:
An optical extender box, comprising: a first wavelength diplexer; and a second wavelength diplexer, wherein the first wavelength diplexer and the second wavelength diplexer are both coupled to a first portion and a second portion, wherein the first portion is for transporting a first optical signal at a first wavelength and the second portion is for transporting a second optical signal at a second wavelength, wherein the first portion in an upstream direction comprises an upstream semiconductor amplifier, which is connected to an upstream isolator, which is connected to an upstream non-linear fiber, which is connected to an upstream pump laser, wherein the second portion in a downstream direction comprises a downstream semiconductor amplifier, which is connected to a downstream isolator, which is connected to a downstream non-linear fiber, which is connected to a downstream pump laser, wherein the optical extender box amplifies downstream time division multiplexing wavelengths and downstream coarse wavelength division multiplexing wavelengths.