Abstract: “ACTIVE WAVELENGTH CONVERTER FOR USE WITH OTDR, composed of: an optoelectronic circuit 5, comprising a photodetector 6, an amplifier 7, a comparator 8, a laser driver 9, an output laser 10, a laser temperature control circuit 11, and an optical circuit 12, comprising an optical fiber segment 13 with a filtering device 14. The converter 4a is composed of an optoelectronic circuit 5, connected in parallel to the optical circuit 12 by a coupler 15 and a circulator 16. The optical signal emitted by the OTDR 1 through fiber 2a is received by the coupler 15 and sent to the optoelectronic circuit 5, where it is converted from an optical to an electric signal, amplified, saturated, reformatted and converted back to an optical signal again, at a wavelength different from the signal emitted by the OTDR 1. It is then sent to the circulator 16 that transmits this changed signal to the optical fiber 2b, where it is propagated.

Abstract: 1—“ACTIVE WAVELENGTH CONVERTER FOR USE WITH OTDR, composed of: an optoelectronic circuit 5, comprising a photodetector 6, an amplifier 7, a comparator 8, a laser driver 9, an output laser 10, a laser temperature control circuit 11, and an optical circuit 12, comprising an optical fiber segment 13 with a filtering device 14. The converter 4a is composed of an optoelectronic circuit 5, connected in parallel to the optical circuit 12 by a coupler 15 and a circulator 16. The optical signal emitted by the OTDR 1 through fiber 2a is received by the coupler 15 and sent to the optoelectronic circuit 5, where it is converted from an optical to an electric signal, amplified, saturated, reformatted and converted back to an optical signal again, at a wavelength different from the signal emitted by the OTDR 1. It is then sent to the circulator 16 that transmits this changed signal to the optical fiber 2b, where it is propagated.

Abstract: “DEVICE FOR THE SWITCHING OF REMOTE OPTICAL SWITCH PER IP ADDRESS” 12, conceived to extend the supervision distance range of centralized optical supervision systems, containing one centralized optical supervision system (COS) 5b, comprising one microcomputer that manages, through a data copper network 6b, several remote points of supervision RPS 7c, each of them formed by one OTDR, one microcomputer 3d and one optical switch 4c; and commanding, through the data copper network 6b, a plurality of remote optical switches 12, individually identified by one fixed IP address, being these remote optical switches 12 displayed in the optical fibers that are connected to the output channels of the optical switch 4c, known as optical fibers, which receive at least one remote optical switch device 12, encompassing one ETHERNET INTERFACE that receives Ethernet standard packages and performs the treatment of the TCP/IP protocol, extracting data contained in it; a microcontroller that receives and decodes data coming from t