Patent ID: 7941057

Claim:
An optical transmission system comprising: an optical transmitter; an optical receiver; and a digital signal source coupled to the optical transmitter and operable to generate an electrical data signal effective to cause the optical transmitter to emit a digital signal onto an optical fiber having a first end coupled to the optical transmitter and a second end coupled to the optical receiver, the optical fiber comprising a dispersive material and defining an optical path length between the first and second ends, wherein: the digital signal comprises a train of zero and one bits, the one bits comprising adiabatic pulses comprising a frequency excursion between a base frequency and a peak frequency; the train of zero and one bits includes a high frequency sequence comprising a first one bit followed by a zero bit followed by a second one bit; the frequency excursion has a value such that the first one bit and second one bit are between π/2 and −π/2 radians out of phase at a middle point of the zero bit when the high frequency sequence arrives at the receiver so as to decrease the bit error rate of the received digital signal at the receiver; the adiabatic pulses have a 1/e 2 pulse width τ 0 upon exiting the transmitter and a 1/e 2 pulse width τ at the receiver after propagation through a length of dispersive fiber; and the difference between the base frequency and peak frequency excursion of the pulses at the transmitter approximately satisfies Δ v AD (τ×erf( T /τ)−τ 0 ×erf( T/τ 0 ))=¼.