Optical transmission switching device

An optical transmission switching device in a multiplex communication system comprising:

• a first replaceable optical module that performs photoelectric conversion on inputted data;
• a first CDR (Clock and Data Recovery) circuit that reproduces data and clock from the data from the first replaceable optical module at a timing according to a set rate;
• a first device information judging circuit that judges device information of the first replaceable optical module through reading out type information, that is, information about the types of interface of the first replaceable optical module and a transmission code in the interface, and that sets the rate of the first CDR circuit through discriminating an interface rate;
• a branching circuit that branches data which is waveform-shaped by the first CDR circuit into a plurality of systems;
• a plurality of second CDR circuits that reproduce, respectively, a plurality of data and clocks which are branched by the branching circuit at a timing according to a set rate;
• a plurality of replaceable second optical modules for performing, respectively, electric-optic conversion on a plurality of data which are waveform-shaped by the second CDR circuits;
• and
• a plurality of second device information judging circuits for judging, respectively, device information of a plurality of the replaceable second optical modules through reading out type information, that is, information about the types of interface of a plurality of the replaceable second optical modules and a transmission code in the interface and that set, respectively, a rate of a plurality of the second CDR circuits through discriminating an interface rate, respectively.

An optical transmission switching device in a multiplex communication system comprising:

• a plurality of first replaceable optical modules, which perform photoelectric conversion on inputted data;
• a plurality of first CDR (Clock and Data Recovery) circuits that reproduce, respectively, data and clock from a plurality of the first replaceable optical modules at a timing according to a set rate;
• a plurality of first device information judging circuits that judge, respectively, device information of a plurality of the first replaceable optical modules, respectively, through reading out type information, that is, information about the types of interface of a plurality of the first replaceable optical modules and a transmission code in the interface and that set, respectively, the rate of a plurality of the first CDR circuits through discriminating an interface rate;
• a selection circuit that selects a system which can receive an effective data through recognizing presence of a plurality of systems of data which are waveform-shaped by a plurality of the first CDR circuits;
• a second CDR circuit that reproduces data and clock of the system selected by the selection circuit at a timing according to a set rate;
• a second optical module that performs electric-optic conversion on data which is waveform-shaped by the second CDR circuit;
• and
• a second device information judging circuit that judge device information of the second optical module through reading out type information, that is, information about the types of interface of the second optical module and a transmission code in the interface, and that sets a rate of the second CDR circuit through discriminating the interface rate, respectively.

An optical transmission switching device in a multiplex communication system comprising:

• a plurality of first replaceable optical modules, each of which performs photoelectric conversion on inputted data;
• a plurality of first CDR (Clock and Data Recovery) circuits that reproduce, respectively, data and clock from a plurality of the first replaceable optical modules at a timing according to a set rate;
• a plurality of first device information judging circuits that judge, respectively, device information of a plurality of the first replaceable optical modules through reading out type information, that is, information about the types of interface of a plurality of the first replaceable optical modules and a transmission code in the interface and that set, respectively, the rate of a plurality of the first CDR circuits through discriminating an interface rate;
• a switching circuit that outputs data on a plurality of lines which are waveform-shaped by a plurality of first CDR circuits to a recipient determined based on the line setting set beforehand;
• a line setting circuit that performs line-switching on the switching circuit based on a setting from outside;
• a plurality of second CDR circuits that reproduce, respectively, data and clock on a plurality of lines outputted from the switching circuit at a timing according to a set rate;
• a second optical module that performs electric-optic conversion on data which is waveform-shaped by the second CDR circuits;
• and
• a plurality of second device information judging circuits that judge, respectively, device information of a plurality of the second optical modules through reading out type information, that is, information about the types of interface of a plurality of the second optical modules and a transmission code in the interface and that set, respectively, a rate of a plurality of the second CDR circuits through discriminating the interface rate.