Direct-drive modulator driver
First Claim
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1. A driver, comprising:
- an input;
an output;
a transistor having a first terminal, a second terminal and a third terminal, wherein the first terminal is coupled to ground and the second terminal is coupled to the output;
a laser diode having a p-terminal and an n-terminal, wherein the p-terminal is coupled to a power supply, and the n-terminal coupled to the second terminal of the transistor; and
an input load coupled to the input and the third terminal of the transistor, the input load comprising an inductor coupled to the third terminal of the transistor.
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Abstract
A direct-drive modulator driver and an optical transponder including the driver are disclosed. The driver includes a transistor having a first terminal, a second terminal and an input terminal, where said first terminal is grounded. The driver further comprises of a laser diode having a p-terminal and an n-terminal, where said p-terminal is coupled to a power supply, and said n-terminal is coupled to the second terminal of the transistor. The driver further comprises of an input load coupled to the input terminal of the transistor.
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Citations
17 Claims
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1. A driver, comprising:
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an input;
an output;
a transistor having a first terminal, a second terminal and a third terminal, wherein the first terminal is coupled to ground and the second terminal is coupled to the output;
a laser diode having a p-terminal and an n-terminal, wherein the p-terminal is coupled to a power supply, and the n-terminal coupled to the second terminal of the transistor; and
an input load coupled to the input and the third terminal of the transistor, the input load comprising an inductor coupled to the third terminal of the transistor. - View Dependent Claims (2, 3, 4, 5)
a capacitor coupled between the inductor and ground;
a first resistor coupled between the inductor and ground; and
a second resistor coupled between the inductor and an input signal.
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6. A direct-drive modulator driver comprising:
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an input;
an output;
a transistor having a first terminal, a second terminal, and a third terminal, the second terminal coupled to ground and the first terminal coupled to the output;
a laser diode having a p-terminal and an n-terminal, the p-terminal for coupling to a first power supply, and wherein the n-terminal is coupled to the first terminal of the transistor;
an inductor coupled between a second power supply and the p-terminal of the laser diode; and
an input load coupled between the third terminal of the transistor and the input. - View Dependent Claims (7, 8, 9)
an inductor coupled to the third terminal of the transistor;
a capacitor coupled between the inductor and ground;
a first resistor coupled between the inductor and ground; and
a second resistor coupled between the inductor and an input signal.
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10. A transponder comprising:
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a receiver;
a transmitter comprising an optic transmitter and a driver, wherein the driver comprises a transistor having a first terminal, a second terminal, and a third terminal, the first terminal coupled to a power supply;
a laser diode having a p-terminal and a n-terminal, wherein the p-terminal is coupled to the second terminal of the transistor and the n-terminal is coupled to ground; and
an input load coupled to the third terminal of the transistor. - View Dependent Claims (11, 12, 13)
an inductor coupled to the third terminal of the transistor;
a capacitor coupled between the inductor and ground;
a first resistor coupled between the inductor and ground; and
a second resistor coupled between the inductor and an input signal.
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14. A driver, comprising:
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an input;
an output;
a transistor having a first terminal, a second terminal, and a third terminal, wherein the first terminal is coupled to a power supply and the second terminal is coupled to the output;
a laser diode having a p-terminal and a n-terminal, wherein the p-terminal is coupled to the second terminal of the transistor and the n-terminal is coupled to ground; and
an input load coupled between the third terminal of the transistor and the input. - View Dependent Claims (15, 16, 17)
an inductor coupled to the third terminal of the transistor;
a capacitor coupled between the inductor and ground;
a first resistor coupled between the inductor and ground; and
a second resistor coupled between the inductor and an input signal.
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Specification