Patent ID: 8027593

Claim:
An optical transmitter with slow chirp compensation, comprising: an optical signal source adapted to be directly modulated and to produce a first signal, the first signal being frequency modulated, phase modulated, or both; and slow chirp compensation means for introducing an inverse response of the slow chirp into the first signal; wherein frequency chirp of the optical signal source is modeled by the formula: v m ⁡ ( f ) = A ⁡ ( 1 + s 1 + 2 ⁢ π ⁢ ⁢ jf ⁢ ⁢ τ s ) ⁢ I m ⁡ ( f ) ; where: v m (f) is frequency chirp; A is adiabatic chirp; s is slow chirp amplitude; j is the imaginary unit; f is modulation frequency; τ s is slow chirp time constant; and I m (f) is modulation current.