| 摘要 |
<p>An apparatus for providing flat gain amplification across a broad wavelength range comprising: input means (21) for inputting an input signal to an amplification waveguide means; output means (22) for outputting an output signal comprising an amplified version of the input signal having substantially flat gain characteristics; noise dissipation means (27); amplification waveguide means (24, 26) connected to the input means and the output means, the amplification waveguide means providing for a variable amplification gain of the wavelength components of the input signal, the degree of amplification being proportional to the length of transmission of the input signal along the amplification waveguide means, the amplification waveguide means further comprising a series of output wavelength coupling means (25) positioned along the amplification waveguide means for coupling predetermined amplified wavelengths from the amplification waveguide means to the output means, in addition to noise wavelength coupling means (24, 26) for coupling unwanted amplifications from the amplification waveguide means to the noise dissipation means (27) for dispersion by the noise dissipation means (27).</p> |
