The invention discloses a polarization independent tunable filter based on Mach-Zehdner Interferometer (MZI). The polarization independent tunable filter includes hybrid 3 desibel primary coupler, a non 3 desibel secondary coupler, a polarization…

The Curry Puff Maker machine is designed to allow 12 puffs to be formed at a time. The process starts by manually laying the dough sheets and fillings, then hand-swing the handle that is incorporated as part of the machine. The invention works on…