This paper describes a simple method that uses an optical phase shifter at the input, for launching and analyzing higher-order modes into a low-mode-number fiber having high selectivity. It was observed that in a double-mode optical fiber the lowest order mode was suppressed to 27 dB. This technique can be applied to multimode fibers for increasing the number of information channels.
|Original language||English (US)|
|Number of pages||3|
|State||Published - Apr 1 1994|
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics