Commercial coherent receivers utilize balanced photodetectors (PDs) with high single-port rejection ratio (SPRR) to mitigate the signal-signal beat interference (SSBI) due square-law detection process. As symbol rates of transponders are increased 100 Gbaud and beyond, maintaining a SPRR in cost-effective manner becomes more challenging. One potential approach for solving this problem is levera...

The Heterodyne Receiver for Origins (HERO) is the first detailed study of a heterodyne focal plane array receiver space applications. HERO gives Space Telescope capability to observe at very high spectral resolution (R = 107) over an unprecedentedly large far-infrared (FIR) wavelengths range (111 617 ?m) with sensitivity, simultaneous dual polarization and dual-frequency band operation. design ...

We introduce the task of random-receiver quantum communication, in which a sender transmits message to receiver chosen from list n spatially separated parties. The choice is unknown sender, but known by parties, who coordinate their actions exchanging classical messages. In normal conditions, communication requires noiseless channel each receivers. contrast, we show that can take place through ...