Method and device for amplifying an optical signal

摘要

According to the invention, the optical signal (SE) is spatially divided into N elementary optical signals (SE.1, SE.2, . . . , SE.N), the spectral ranges thereof being adjacent in pairs and forming, substantially by juxtaposition, the spectral range of the optical signal; these N elementary signals are amplified respectively by means of N elementary amplifiers (4.1, 4.2, . . . , 4.N), the spectral ranges thereof respectively comprising the spectral ranges of said N elementary signals; the N amplified elementary signals (Ss.1, Ss.2, . . . , Ss.N) are assembled to form an amplified optical signal (Ss), the spectral range thereof substantially coinciding with a predetermined spectral range, and finally the spectral phases of the N initial elementary signals (Ss.1, Ss.2, . . . , Ss.N) are adjusted before amplification on the basis of the spectral phase of said amplified signal (Ss).

主权项

1. Method for amplifying an optical signal (SE), wherein:
the optical signal (SE) is spatially divided into N elementary optical signals (SE.1, SE.2, . . . , SE.N), the spectral ranges (ΔλE.1, ΔλE.2, . . . , ΔλE.N) of which are adjacent in pairs and form, substantially by juxtaposition, the spectral range (ΔλE) of the optical signal (SE), N being an integer at least equal to 2; the N elementary optical signals (SE.1, SE.2, . . . , SE.N) are amplified respectively by N elementary amplifiers (4.1, 4.2, . . . , 4.N), the spectral ranges of amplification (ΔλG.1, ΔλG.2, . . . , ΔλG.N) of which respectively comprise substantially the spectral ranges (ΔλE.1, ΔλE.2, . . . , ΔλE.N) of said N elementary optical signals; the N amplified elementary optical signals (SS.1, SS.2, . . . , SS.N) are assembled to form an amplified optical signal (SS), the spectral range (ΔλS) of which substantially coincides with a predetermined spectral range; and the spectral phases of the N initial elementary optical signals (SE.1, SE.2, . . . , SE.N) are adjusted before amplification on the basis of the spectral phase of said amplified optical signal (SS).