Method and apparatus for controlling tunable transmitter chirp
AssigneeEmcore Corporation
InventorStephen Krasulick
Life of this patent
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Abstract
A fiber-optic transmission system includes a transmitter having a designed chirp value. The transmitter has first and second inputs for receiving first and second input signals, respectively, used to produce a modulated output signal. An optical fiber is responsive to the transmitter for receiving the output signal. A circuit asymmetrically drives the first and second input signals so as to change the designed chirp value of the transmitter to another value. Methods of controlling the chirp of a commercially available transmitters are also disclosed. Because of the rules governing abstracts, this abstract should not be used to construe the claims.
Claims25
A fiber-optic transmission system, comprising:
- a transmitter having a designed chirp value, said transmitter having first and second inputs for receiving first and second input signals, respectively, used to produce a modulated output signal;
- an optical fiber responsive to said transmitter for receiving said output signal;
- and
- a circuit for asymmetrically driving said first and second input signals so as to change said designed chirp value of said transmitter.
A combination, comprising:
- a transmitter having a designed chirp value, said transmitter having first and second inputs for receiving first and second input signals, respectively, used to produce a modulated output signal;
- and
- a circuit for controlling a first amplitude of said first input signal and a second amplitude of said second input signal such that said first and second amplitudes are asymmetrical so as to change said designed chirp value of said transmitter to another value.
A method of controlling the chirp of a transmitter, comprising:
- asymmetrically driving first and second input signals input to said transmitter so as to change the chirp of said transmitter from a designed value to a desired value.
A method of controlling the chirp of a transmitter, comprising:
- controlling a first amplitude of a first input signal and a second amplitude of a second input signal such that said first and second amplitudes are asymmetrical so as to change said designed chirp value of said transmitter to another value.
A fiber-optic transmission system of the type having a commercially available transmitter having first and second inputs for receiving signals used to produce a modulated output signal, said transmitter further having a designed chirp value, the improvement comprising asymmetrically driving said first and second input signals so as to change said designed chirp value of said transmitter to another value.
Dependencies are inferred from the claim text.