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A cost-effective all-optical 2R regenerator, comprising a compact self-seeded Fabry-Perot laser diode, and a bidirectional EDFA, is proposed. This module, with 10.2-dB gain, achieves 6.4-dB power-penalty improvement over the 1R regenerator in the 100-km transmission.
Third order cascaded Raman shifting is used to generate light to 1867 nm in sulfide fibers, and the nonlinearity is measured to be ~5.7 times 10-12 (m/W). Damage at ~1 GW/cm2 limits the wavelength shift range.
An EDFA bypass and filtering architecture is demonstrated , allowing a 1310 nm QKD channel to be transmitted over the same fiber as four 1.5 mum WDM channels which are amplified in mid-span.
Pulse propagation in Er3+-doped fiber amplifiers (EDFA) is studied within the framework of a spectrally-resolved pulse rate-propagation equations model. Calculated pulse spectrograms demonstrate the effects of dispersion on sub-picosecond pulse propagation in EDFAs.
We study the power dependence of the back reflection from microsphere resonators. Experimental results are compared with theoretical models. An EDFA (Erbium Doped Fiber Amplifier) based laser with a microsphere mirror is demonstrated.
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