Jitter compensation method and apparatus
OwnerLinn Frederick Mollenauer, Chunhui Xuinventors
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Abstract
A jitter compensator apparatus is provided having a phase modulator for receiving jittered pulses and a clock recovery device for locally recovering a clock signal. The phase modulator is driven in synchronism by the the locally recovered clock signal and is adapted to provide a frequency shift to the jittered pulses proportional to the jitter displacement of each of the jittered pulses.
Claims26
A jitter compensator apparatus comprising:
- a phase modulator for receiving jittered pulses;
- and
- a clock recovery device for locally recovering a clock signal;
- wherein the phase modulator is driven in synchronism by the locally recovered clock signal and is adapted to provide a frequency shift to the jittered pulses proportional to the jitter displacement of each of the jittered pulses.
A jitter compensator apparatus comprising:
- a first polarization beam splitter for separating a jittered pulse signal into a first signal component and a second signal component;
- a first phase modulator for receiving the first signal component;
- a second phase modulator for receiving the second signal component;
- a clock recovery device for locally recovering a clock signal;
- and
- a second polarization beam splitter for combining output signals from the first and the second phase modulators,
- wherein the first and second phase modulators are driven in synchronism by the locally recovered clock signal and are adapted to provide a frequency shift to jittered pulses of the jittered pulse signal proportional to the jitter displacement of each of the jittered pulses.
A method of compensating for jitter in an optical transmission system comprising:
- using a phase modulator prior to a receiver to provide a frequency shift to jittered pulses of a jittered pulse signal, wherein the phase modulator is driven in synchronism with a locally recovered clock signal.
A method of compensating for jitter in an optical transmission system comprising:
- separating a jittered pulse signal into a first signal components and a second signal component;
- and
- using a first phase modulator and a second phase modulator to provide a frequency shift to jittered pulses of the first signal component and the second signal component of the jittered pulse signal proportional to the jitter displacement of each of the jittered pulses;
- wherein the first and second phase modulators are driven in synchronism by the locally recovered clock signal.
Dependencies are inferred from the claim text.