A directional coupler is used to sample a small amount of input signal power for measurement purposes. Port 1 is the input port; port 2 is the output port; port 3 is the coupled port; port 4 is the ...

TTM Technologies, Inc. Unveils New Xinger® High-Performance 50W (AVG) Directional and Hybrid Couplers for X-Band Commercial-Off-The-Shelf Military and Aerospace Applications TTM Technologies, Inc ...

Using a directional coupler implemented with silicon nitride nanophotonic waveguides, we observe 97% interference visibility when measuring photon statistics with two monolithically integrated ...