Patent ID: 7773294
Filing Date: 2010-08-10
Classification: H01S

Abstract:
1. A method for amplifying a pulse light signal having a signal wavelength, the method comprising: providing a rare-earth-doped amplification waveguide having at least one absorption transition peak wavelength and having a waveguide length; providing a first pump light having a first pump central wavelength substantially greater than said at least one absorption transition peak wavelength, lower than said signal wavelength and being selected such that an absorption of said first pump light and an amplification gain of said signal are substantially equal in said amplification waveguide; propagating said first pump light in said amplification waveguide, said absorption of said first pump light in said amplification waveguide providing said amplification gain such that it is distributed substantially uniformly along said waveguide length; and coupling said pulse light signal to be amplified to said amplification waveguide, said pulse light signal reaching a parabolic pulse asymptotic solution as it propagates along said amplification waveguide to provide an amplified parabolic pulse light signal.