Multi-mode fiber-based optical transmission/reception apparatus

An optical reception apparatus comprising:

• a mode demultiplexer configured to separate a multi-mode combination optical signal transmitted through a fiber into single-mode optical signals;
• a reception light source configured to generate light of a same wavelength as light of a transmission light source;
• a power coupler configured to split the light of the reception light source into a plurality of sections;
• at least one demodulator configured to mix the single-mode signals separated by the mode demultiplexer and the light sections split by the power coupler to generate a baseband signal and convert the baseband signal to an electrical signal;
• and
• a digital signal processor configured to recover digital data by converting the electrical signal into a digital signal.

An optical reception apparatus comprising:

• a mode demultiplexer configured to separate a multi-mode combination optical signal transmitted through a fiber into single-mode optical signals;
• a power coupler configured to split light of a transmission light source which has been separated by the mode demultiplexer;
• at least one demodulator configured to mix the single-mode signals separated by the mode demultiplexer and light split by the power coupler to generate a baseband signal and convert the baseband signal to an electrical signal;
• and
• a digital signal processor configured to recover digital data by converting the electrical signal into a digital signal.

A multi-mode fiber-based optical transmission method of an optical transmission apparatus, the multi-mode fiber-based optical transmission method comprising:

• splitting single-mode light of a specific wavelength into a plurality of light sections;
• modulating at least one electrical signal carrying different data into at least one optical signal using the split light section;
• and
• converting the modulated optical signal into a different mode, and transmitting the mode-converted optical signal to a fiber.

A multi-mode fiber-based optical reception method of an optical reception apparatus, the multi-mode fiber-based optical reception method comprising:

• separating a multi-mode combination optical signal transmitted through a fiber into single-mode optical signals;
• splitting light into a plurality of sections, the light with a same wavelength as that of light of a transmission light source;
• mixing the single-mode signals separated from the multi-mode combination signal and the split light sections to generate a baseband signal, and converting the baseband signal to an electrical signal;
• and
• recovering digital data by converting the electrical signal into a digital signal.