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High bandwidth 2-$\mu \text{m}$ wavelength surface normal p-i-n photodiodes using a high indium-content InGaAs strain-relaxed absorbing layer clad by p- and n-doped AlInGaAs layers are realized. A parabolic grading was used to relax the lattice constant from that of the InP substrate. We compare structures with different p-doping profiles and absorber thicknesses to achieve a 3-dB bandwidth of ...
World's first demonstration of WDM transmission in a HC-PBGF at the predicted low loss region of 2μm is presented. A total capacity of 16 Gbit/s is achieved using 1×8.5 Gbit/s and 3×2.5 Gbit/s channels modulated using NRZ OOK over 290 meters of hollow core fiber.
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