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A compact all-silicon Mach-Zehnder interferometer (MZI) filter with temperature sensitivity less than 5pm/ K is demonstrated. The device achieves a reduced footprint by making use of different polarizations.
Light emissions due to direct transitions in strained germanium with electron doping are studied based on first principles calculations. We found that an accuracy of the band structure is a key to improve reproducibility of experimental measurements. Combinations of carrier density, strain, and temperature necessary for lazing are discussed based on these calculations. We also found that measuring...
Ge-on-Si single-photon detectors are fabricated and characterized at 1310 and 1550 nm. 4 % single-photon detection efficiency is observed at 1310 nm demonstrating the lowest reported noise equivalent power for Ge-on-Si single-photon detectors (1×10−14 WHz−1/2).
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