We achieved first dynamic all-optical wavelength conversion in bandgap-engineered MZI SOA all-optical switch. Clear eye-diagram of 2.5Gbps wavelength conversion was confirmed. This is the first wavelength conversion demonstration with a bandgap-engineered PIC with either selective-area-growth and quantum-well-intermixing techniques.
A triangle-shape optical coherence function is synthesized, and is applied to construct a system for real-time stress- location measurement along an optical fiber. We utilize a polarization maintaining fiber (PMF) for the sensing element, and the coupling from one eigen polarization mode to the other by the stress is used as the sensing mechanism. The delay difference between the two eigen polarization modes linearly corresponds to the stress-position on PMF, which is measured as the degree of coherence linearly changing from 1 to 0, like a triangle. By extracting the coherence value, the stress point is figured out in real time.
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