Brief description of the otdr
Brief description of the otdr
The otdr(supplied byotdr manufacturer) will be better understood by reading the detailed description in the figures that refer to it, of which:
FIG. 1 represents the disposition of the functional blocks of the OTDR 1 in the previous technique.
FIG. 2 represents the backscattering reading of the signal emitted by the OTDR 1 referred to in the previous technique.
FIG. 3 represents the disposition of the functional blocks of the wavelength converter 4a for the OTDR in one of their possible implementation ways.
FIG. 4 represents the disposition of the converter 4b functional blocks for OTDR in one of their possible implementation ways.
FIG. 5 represents the reading of the backscattering concerning the signal emitted by the OTDR 1, recovered by the converter 4b, according to one of the invention's possible implementation ways.
In the present concept, the change of the fusion splicer(supplied by fusion splicer manufacturer)wavelength signal occurs in the optoelectronic circuit 5, through the output laser 10 that is selected in a manner to emit light in the power and in the wavelength adequate to the application ofthe converter 4a, said wavelength, which is different from the traffic signal present in the supervised route. The temperature of the output laser 10 is monitored and controlled through an electronic circuit 11 that measures the temperature of athermistor-type sensor and controls it with a "Peltier" cooler placed near the laser light source, thus extending the useful life of the output laser 10.
Practical measurements performed through the OTDR 1, and represented in FIG. 5, demonstrate that, through the utilization of a converter 4b, it is possible to increase the OTDR 1 supervision distance range from 160 km to approximately 240 km ofoptical fiber. This range can be increased even more by using additional converters 4b, placed in series, at the route points in which the signal needs to be recovered.
Although the invention has been described in connection with certain preferred realization modalities, it should be understood that the invention is not intended to be limited to those particular modalities. On the contrary, the intention is tocover all of the alternatives, modifications and equivalencies possible within the spirit and the scope of the otdr(supplied by otdr manufacturer).
The otdr(supplied byotdr manufacturer) will be better understood by reading the detailed description in the figures that refer to it, of which:
FIG. 1 represents the disposition of the functional blocks of the OTDR 1 in the previous technique.
FIG. 2 represents the backscattering reading of the signal emitted by the OTDR 1 referred to in the previous technique.
FIG. 3 represents the disposition of the functional blocks of the wavelength converter 4a for the OTDR in one of their possible implementation ways.
FIG. 4 represents the disposition of the converter 4b functional blocks for OTDR in one of their possible implementation ways.
FIG. 5 represents the reading of the backscattering concerning the signal emitted by the OTDR 1, recovered by the converter 4b, according to one of the invention's possible implementation ways.
In the present concept, the change of the fusion splicer(supplied by fusion splicer manufacturer)wavelength signal occurs in the optoelectronic circuit 5, through the output laser 10 that is selected in a manner to emit light in the power and in the wavelength adequate to the application ofthe converter 4a, said wavelength, which is different from the traffic signal present in the supervised route. The temperature of the output laser 10 is monitored and controlled through an electronic circuit 11 that measures the temperature of athermistor-type sensor and controls it with a "Peltier" cooler placed near the laser light source, thus extending the useful life of the output laser 10.
Practical measurements performed through the OTDR 1, and represented in FIG. 5, demonstrate that, through the utilization of a converter 4b, it is possible to increase the OTDR 1 supervision distance range from 160 km to approximately 240 km ofoptical fiber. This range can be increased even more by using additional converters 4b, placed in series, at the route points in which the signal needs to be recovered.
Although the invention has been described in connection with certain preferred realization modalities, it should be understood that the invention is not intended to be limited to those particular modalities. On the contrary, the intention is tocover all of the alternatives, modifications and equivalencies possible within the spirit and the scope of the otdr(supplied by otdr manufacturer).