Optical transceiver

Abstract

An optical transceiver of the present invention includes a coexistence element therein. An optical signal according to a first standard and an optical signal according to a second standard are transmitted and received through an optical cable accommodated in a first receptacle of the optical transceiver, and in the coexistence element, the optical signal according to the first standard and the optical signal according to the second standard are divided/combined. Among the divided upstream optical signals, the optical signal according to the first standard is photoelectrically converted in the optical transceiver, and the optical signal according to the second standard is transmitted to the outside through an optical cable accommodated in a second receptacle.

What is claimed is: 
     
         1 . An optical transceiver comprising:
 a first receptacle which accommodates an optical cable through which an upstream optical signal in which a reception wavelength optical signal according to a first standard and a reception wavelength optical signal according to a second standard coexist, and a downstream optical signal, in which a transmission wavelength optical signal according to the first standard and a transmission wavelength optical signal according to the second standard coexist, are transmitted;   a second receptacle which accommodates an optical cable through which the reception wavelength optical signal according to the second standard and the transmission wavelength optical signal according to the second standard are transmitted;   a coexistence element which divides an optical path of the reception wavelength optical signal according to the first standard and the reception wavelength optical signal according to the second standard which are received through the optical cable accommodated in the first receptacle, transmits the reception wavelength optical signal according to the second standard through the optical cable accommodated in the second receptacle, changes an optical path of the transmission wavelength optical signal according to the second standard received through the optical cable accommodated in the second receptacle, and transmits the transmission wavelength optical signal according to the second standard through the optical cable accommodated in the first receptacle; and   a first standard optical signal converter which photoelectrically converts the reception wavelength optical signal according to the first standard transmitted from the coexistence element and electro-optically converts a signal for data to be transmitted to the transmission wavelength optical signal according to the first standard,   
     
     
         2 . The optical transceiver of  claim 1 , wherein the coexistence element includes:
 a housing;   a wavelength division multiplexing (WDM) filter through which the reception wavelength optical signal according to the first standard and the transmission wavelength optical signal according to the first standard pass and which reflects the reception wavelength optical signal according to the second standard and the transmission wavelength optical signal at a preset angle; and   an optical path change part which includes a first mirror and a second mirror, transmits an optical signal received through the first receptacle and reflected by the WDM filter to an outside through the second receptacle, and transmits an optical signal received through the second receptacle and reflected by the WDM filter to the outside through the first receptacle.