Raman Research Institute scientists identified Hanle, Ladakh, as the prime location in India for satellite-based quantum communications. Hanle's high altitude, dry air, and low temperatures ...

Eight different test wavelengths can be selected, 1310, 1550, 1490, 1625, 1650, 850, 1300 and 980, and the selected test wavelength is displayed on the upper screen.

PB consists in a light-annealing of some of the radiation-induced point defects, during or after irradiation. We investigate the PB effects induced by 10 mW power pumps at three different wavelengths ...

When the refractive index difference between the silica core and cladding layers is 2%, the measured coupling loss is 0.52 dB/facet at the wavelength 1550 nm. The bandwidth with a penalty less than 1 ...