Frequency chirp under current modulation in InGaAsP injection lasers.
01 January 1984
We have measured the frequency chirp in gain guided, weakly index guided, and strongly index guided InGaAsP lasers under direct current modulation. The measured chirp width is largest for gain guided and smallest for weakly index guided ridge waveguide lasers. The chirp width for 1.5micron InGaAsP lasers is about a factor of 2 larger than that for 1.3micron InGaAsP lasers of the same structure.