Multi-data-rate optical transceiver

1. An optical transceiver module, comprising

an optical-to-electrical converter configured to convert a first optical signal to a first electric signal;

a first amplifier configured to amplify the first electric signal;

a bandwidth controller coupled to the first amplifier, configured to control the frequency response characteristics of the amplification of the first amplifier to produce a first amplified electric signal;

a driver circuit configured to receive a second electric signal and to produce a second amplified electric signal in response to the second electric signal and an optical feedback signal;

an electrical-to-optical converter configured to convert the second amplified electrical signal to a second optical signal; and

a photo diode configured to detect the second optical signal and to produce the optical feedback signal to be received by the driver circuit, and

an electrical interface configured to receive the second electrical signal and output the first amplified electrical signal, wherein the electrical interface comprises a Physical Media Attachment block (PMA) coupled to the first amplifier and the driver circuit, and configured to receive the first amplified electrical signal from the first amplifier and to transmit the second electrical signal to the driver circuit.

2. The optical transceiver module in claim 1 , further comprising:

a second user command interface configured to receive a second bandwidth control signal; and

a micro-controller coupled to the driver circuit, configured to control the, bias voltage and driving current of the driver circuit in response to the bandwidth control signal.

3. The optical transceiver module in claim 2 , wherein the driver circuit can amplify the second electric signal in selective frequency ranges to produce the amplified electric signal in response to the second electric signal and the optical feedback signal.

4. The optical transceiver module in claim 1 , wherein the photo diode is configured to measure the power of the second optical signal to produce the optical feedback signal to be received by the driver circuit.

5. The optical transceiver module in claim 1 , further comprising:

a first user command interface coupled to the bandwidth controller, configured to transmit a bandwidth control signal to the bandwidth controller.

6. The optical transceiver module in claim 5 , wherein the first amplifier can selectively amplify the first electric signal in a frequency range in response to the bandwidth control signal.

7. The optical transceiver module in claim 1 , further comprising:

an optical interface configured to receive the first optical signal and output the second optical signal.

8. The optical transceiver module in claim 7 , wherein the optical interface is in compliance with the Small Form-factor Pluggable.

9. The optical transceiver module in claim 1 , wherein the electrical interface comprises a Physical Coding Sublayer block (PCS) coupled to the Physical Media Attachment block (PMA), and configured to receive the first amplified electrical signal from the Physical Media Attachment block and to transmit the second electrical signal to the Physical Media Attachment block.

10. The optical transceiver module in claim 1 , wherein the electrical interface complies with the Media Independent Interface or the Gigabit Media independent Interface.

11. An optical transceiver module, comprising

an optical-to-electrical converter configured to convert a first optical signal to a first electric signal;

a first amplifier configured to amplify the first electric signal;

a bandwidth controller coupled to the first amplifier, configured to control the frequency response characteristics of the amplification of the first amplifier to produce an first amplified electric signal;

a driver circuit configured to receive a second electric signal and to produce an amplified electric signal in response to the second electric signal and a optical feedback signal;

an electrical-to-optical converter configured to convert the amplified electrical signal to a second optical signal;

a photo diode configured to detect the second optical signal and to produce the optical feedback signal to be received by the driver circuit;

a second user command interface configured to receive a second bandwidth control signal;

a micro-controller coupled to the driver circuit and the electrical-to-optical converter, wherein the micro-controller is configured to control the bias voltage and driving current of the driver circuit in response to the bandwidth control signal;

an optical interface configured to receive the first optical signal and output the second optical signal; and

an electrical interface configured to receive the second electrical signal and output the first amplified electrical signal, wherein the electrical interface includes

a Physical Media Attachment block (PMA) coupled to the first amplifier and the driver circuit, configured to receive the first amplified electrical signal from the first amplifier and transmits the second electrical signal to the driver circuit; and

a Physical Coding Sublayer block (PCS) coupled to the Physical Media Attachment block (PMA), configured to receive the first amplified electrical signal from the Physical Media Attachment block and transmits the second electrical signal to the Physical Media Attachment block.

12. The optical transceiver module in claim 11 , further comprising:

a first user command interface coupled to the bandwidth controller, configured to transmit a bandwidth control signal to the bandwidth controller,

wherein the first amplifier can selectively amplify the first electric signal in a frequency range in response to the bandwidth control signal.