Current/frequency-modulation characteristics for directly optical frequency-modulated injection lasers at 830 nm and 1.3 μm

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Abstract
The modulus and phase of the current/frequency-modulation transfer function for a 1.3 μm GaInAsP/InP BH laser have been measured in the frequency range from 1 kHz to 500 MHz. Using a Hilbert transformation it is demonstrated how the phase delay can be determined from the modulus for two different lasers, the 1.3 μm BH laser and an 830 nm CSP laser.