Patent ID: 6229642
Filing Date: 2001-05-08
Classification: H01S,H04B

Abstract:
A distributed erbium doped optical waveguide fiber amplifier, comprising:an optical waveguide fiber, having a length, a net positive total dispersion, D, and a core region in contact with a surrounding clad layer, said core region containing erbium, having a ground state and distributed along the length of said waveguide fiber;optical pumping means to provide pump light to excite erbium to an energy state above the ground state; and,coupling means for injecting pump light and soliton pulses into said waveguide fiber;wherein, said distributed waveguide fiber amplifier produces an excursion in the power maximum of each soliton in the range of about +3.0 dB to +5.2 dB, relative to a reference fundamental soliton power having an order number of one in normalized units, at which self phase modulation is balanced with group velocity dispersion, D.