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FIBER-OPTIC COMMUNICATION APPARATUS CAPABLE OF OPERATING IN A NORMAL MODE AND A POWER CALIBRATION MODE, AND COMMUNICATION DEVICE USED WITHIN THE SAME

  • US 20140363158A1
  • Filed: 01/28/2014
  • Published: 12/11/2014
  • Est. Priority Date: 06/05/2013
  • Status: Active Grant
First Claim
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1. A fiber-optic communication apparatus capable of operating in a normal mode and a power calibration mode, said fiber-optic communication apparatus comprising:

  • a first communication device;

    a second communication device; and

    an optical fiber cable interconnecting said first and second communication devices;

    said first communication device includinga first signal generator operable to generate a first calibration signal with a first predetermined power level,a first multiplexer coupled to said first signal generator for receiving the first calibration signal therefrom and for further receiving a first radio frequency (RF) signal, said first multiplexer being operable to output one of the first calibration signal and the first RF signal as a first selection signal in response to a first control signal,a first controller coupled to said first multiplexer, and operable to generate the first control signal in accordance with a desired one of the normal mode and the power calibration mode of said fiber-optic communication apparatus, such that said first multiplexer outputs the first calibration signal as the first selection signal when said fiber-optic communication apparatus operates in the power calibration mode, and outputs the first RF signal as the first selection signal when said fiber-optic communication apparatus operates in the normal mode, anda first electro-optic converter coupled between said first multiplexer and one end of said optical fiber cable for converting the first selection signal from said first multiplexer into a first optical signal;

    said second communication device includinga first optic-electro converter coupled to the other end of said optical fiber cable for receiving the first optical signal, which is transmitted from said first communication device through said optical fiber cable, and operable to convert the first optical signal into a first electrical signal, anda first calibration unit coupled to said first optic-electro converter for receiving the first electrical signal therefrom, said first calibration unit being operable todetect a power level of the first electrical signal associated with the first calibration signal and obtain a first power attenuation ratio based on the power level detected thereby and the first predetermined power level when said fiber-optic communication apparatus operates in the power calibration mode, andadjust the power level of the first electrical signal associated with the first RF signal based on the first power attenuation ratio so as to generate a first output signal with the adjusted power level when said fiber-optic communication apparatus operates in the normal mode.

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