All-optical dispersion monitor based on optical parameter amplifier
An optical amplifier and amplifier technology, which is applied in the fields of instruments, optics, nonlinear optics, etc., can solve the problems of insufficient sensitivity to optical signal dispersion changes, large system power consumption and volume, and low output signal contrast, and achieve signal rate and modulation format The effects of transparency, high output signal contrast, and wide working band
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[0020] Such as figure 1 The all-optical dispersion monitor shown includes: the input tunable optical filter TF, the optical amplifier is an erbium-doped fiber amplifier EDFA, and the optical amplifier can also use SOA or other optical amplifiers, such as semiconductor optical amplifiers, where the required signal power is low The optical amplifier can also be omitted; the semiconductor laser LD that provides continuous detection waves, the optical parametric amplifier OPA, the output optical filter Filter and the optical power meter. After the wavelength division multiplexing WDM optical signal passes through the optical coupler Coupler, most of the optical power is transmitted along the original path, and a small part of the optical power enters the all-optical dispersion monitor shown in the dashed box. TF controls the wavelength of the WDM signal input to the dispersion monitoring system. By adjusting the central wavelength of the TF, WDM channels can enter the dispersion m...
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