FIBER-OPTIC COMMUNICATION APPARATUS CAPABLE OF OPERATING IN A NORMAL MODE AND A POWER CALIBRATION MODE, AND COMMUNICATION DEVICE USED WITHIN THE SAME
First Claim
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.
1 Assignment
0 Petitions
Accused Products
Abstract
A fiber-optic communication apparatus includes first and second communication devices interconnected by an optical fiber cable. The first communication device converts one of a calibration signal with a predetermined power level and a radio frequency (RF) signal into an optical signal. The second communication device converts the optical signal, which is transmitted through the optical fiber cable, into an electrical signal, detects a power level of the electrical signal associated with the calibration signal, obtains a power attenuation ratio based on the power level detected thereby and the predetermined power level, and adjusts the power level of the electrical signal associated with the RF signal based on the power attenuation ratio.
-
Citations
17 Claims
-
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 including a 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, and a 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 including a 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, and a first calibration unit coupled to said first optic-electro converter for receiving the first electrical signal therefrom, said first calibration unit being operable to detect 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, and adjust 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A communication device comprising:
-
a signal generator operable to generate a first calibration signal; a multiplexer coupled to said signal generator for receiving the first calibration signal therefrom, and further receiving a radio frequency (RF) signal; a controller coupled to said multiplexer, and operable to generate and output a control signal to said multiplexer to control said multiplexer to output one of the first calibration signal and the RF signal as a selection signal; and an electro-optic converter coupled to said multiplexer for converting the selection signal therefrom into a first optical signal. - View Dependent Claims (11, 12, 13, 14, 15, 16)
-
-
17. A communication device configured to be used within a fiber-optic communication apparatus capable of operating in a normal mode and a power calibration mode, said communication device comprising:
-
a signal generator operable to generate a calibration signal with a predetermined power level; an antenna operable to receive a radio frequency (RF) signal therethrough; a multiplexer coupled between said signal generator and said antenna for receiving the calibration signal and the RF signal therefrom, respectively, said multiplexer being operable to output one of the calibration signal and the RF signal as a selection signal in response to a control signal; a controller coupled to said multiplexer, and operable to generate the control signal in accordance with a desired one of the normal and power calibration modes of said communication device such that said multiplexer outputs the calibration signal as the selection signal when the fiber-optic communication apparatus operates in the power calibration mode, and outputs the RF signal as the selection signal when the fiber-optic communication apparatus operates in the normal mode; a calibration unit coupled to said multiplexer for receiving the selection signal therefrom, and further receiving a detection signal indicating a detected power level, said calibration unit being operable to generate an output signal, which has a power level identical to that of the calibration signal serving as the selection signal, and obtain a power attenuation ratio based on the detected power level indicated by the detection signal and the predetermined power level when the fiber-optic communication apparatus operates in the power calibration mode, and adjust a power level of the RF signal serving as the selection signal based on the power attenuation ratio such that the RF signal with the adjusted power level serves as the output signal when the fiber-optic communication apparatus operates in the normal mode; and an electro-optic converter coupled to said calibration unit for converting the output signal therefrom into an optical signal.
-
Specification