Patent ID: 7606501

Claim:
A system for generating an optical return-to-zero signal, the system comprising: a bit separator configured to receive an electrical non-return-to-zero signal and generate a first input signal and a second input signal; a first driver configured to receive the first input signal and generate a first driving signal, the first driving signal being proportional to the first input signal in signal strength; a second driver configured to receive the second input signal and generate a second driving signal, the second driving signal being proportional to the second input signal in signal strength; a light source configured to generate a light; an electro-optical modulator configured to receive the light, the first driving signal, and the second driving signal, modulate the light with the first driving signal and the second driving signal, and generate an optical signal; wherein: the electrical non-return-to-zero signal includes a first plurality of bits and a second plurality of bits; the first input signal includes the first plurality of bits; the second input signal includes the second plurality of bits; the optical signal is an optical chirped return-to-zero signal.