By directing the input light into a particular mode it is possible to obtain as output all of the input light for a beam splitter that is 50% absorbing. This effect is also responsible for nonlinear quantum interference when two photons are incident on the beam splitter.

Here, we propose an optical filter and an optical power splitter based on two-dimensionalphotonic crystal all circular ring resonators. These structures are made of a square lattice ofsilicon rods with the refractive index n1=3.464 surrounded by air (with refractive indexn2=1). First, we have designed the filter and by using that, we designed a power splitter. Thetransmission efficiency and Qua...

A 1x3 beam splitter using multi-mode interference based on self-imaging is demonstrated theoretically and experimentally in PhCWs. The total transmission of the 1x3 splitter is almost equal to the corresponding length of W1 PhCW. The input power is distributed equally between the output ports within 1dB from 1541nm to 1552nm. KeywordsSplitter; Self-imaging; multi-mode interference; Photonic Cry...

All-reflective interferometric gravitational-wave detector configurations with a diffraction grating as a power beam splitter have been proposed to reduce thermal lensing. We demonstrate the use of a diffraction grating as a polarization beam splitter in a zero-area polarization Sagnac interferometer.