A coherent-detection technique for very narrow linewidth millimetre-wave and microwave signals is described. Wide laser linewidth is eliminated at the receiver by nonlinear operation. An experiment demonstrating such a technique with laser intermediate-frequency linewidth of 200 MHz is reported, where the resulting electrical linewidth is limited only by the resolution bandwidth of the spectrum analyser.
|Original language||English (US)|
|Number of pages||2|
|State||Published - Jan 1 1993|
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering