frequency interval
2.The Stocks spectrum of every frequency interval was pumped by those of higher frequency and pumped those of lower frequency. The effcet between them can be described by coupled differential equation. Solving the equationgroup of the entire frequency range, the Raman spectrum in different length fiber pumped by diff erent intersity be calculated and the threshold pump intensity be obtained by study the calculated spectrum.
4.Abstract: Applied the principle of electromagnetic interference prediction,interference multi-predictions are made to solve the frequency spectrum administration in accordance with collective using radio sets in integrated communication command system.This paper obtains the frequency interval between radio sets making sure the electromagnetic compatibility.
