Optical dual brain signal measurement device

An optical brain signal measurement device comprising:

• a light source unit for transferring an optical signal of a first wavelength and an optical signal of a second wavelength through a first optical fiber that transfers the optical signal of a first wavelength transmitted in a first wavelength range and the optical signal of a second wavelength transmitted in a second wavelength range in the first directionality;
• a first segmentation/concatenation unit for outputting a concatenation signal concatenating the optical signal transmitted in a first wavelength range and the optical signal transmitted in a second wavelength range or segmentation signals segmenting a concatenation signal through the first optical fiber;
• a second segmentation/concatenation unit for transferring any one signal among the concatenation signal and the segmentation signal to at least one brain signal measurement target through the first optical fiber, and transferring a measurement signal returning from the at least one brain signal measurement target through a second optical fiber that transmits the measurement signal in at least one wavelength range among a third wavelength range and a fourth wavelength range and transfers in the second directionality;
• and
• a measurement unit for measuring at least one brain signal of the at least one brain signal measurement target on the basis of the transferred measurement signal.

An optical brain signal measurement method comprising the steps of:

• inputting an optical signal of a first wavelength and an optical signal of a second wavelength, by a light source unit;
• transmitting the optical signal of a first wavelength in a first wavelength range, and transmitting the optical signal of a second wavelength in a second wavelength range, by an excitation filter unit;
• receiving the optical signal transmitted in a first wavelength range and the optical signal transmitted in a second wavelength range on the basis of a first directionality of an optical fiber, and outputting a concatenation signal concatenating the transferred optical signals or segmentation signals segmenting a concatenation signal, by a first segmentation/concatenation unit;
• transferring any one signal among the concatenation signal and the segmentation signal to at least one brain signal measurement target on the basis of the first directionality of the optical fiber, and transferring a measurement signal returning from the at least one brain signal measurement target on the basis of a second directionality of the optical fiber, by a second segmentation/concatenation unit;
• transmitting the transferred measurement signal in at least one wavelength range among a third wavelength range and a fourth wavelength range, by an emission filter unit;
• and
• measuring at least one brain signal of the at least one brain signal measurement target on the basis of the measurement signal transmitted in at least one wavelength range, by a measurement unit.

An optical brain signal measurement method comprising the steps of:

• transferring an optical signal of a first wavelength and an optical signal of a second wavelength through a first optical fiber that transfers the optical signal of a first wavelength transmitted in a first wavelength range and the optical signal of a second wavelength transmitted in a second wavelength range in the first directionality, by a light source unit;
• outputting a concatenation signal concatenating the optical signal transmitted in a first wavelength range and the optical signal transmitted in a second wavelength range or segmentation signals segmenting a concatenation signal through the first optical fiber, by a first segmentation/concatenation unit;
• transferring any one signal among the concatenation signal and the segmentation signal to at least one brain signal measurement target through the first optical fiber, and transferring a measurement signal returning from the at least one brain signal measurement target through a second optical fiber that transmits the measurement signal in at least one wavelength range among a third wavelength range and a fourth wavelength range and transfers in the second directionality, by a second segmentation/concatenation unit;
• and
• measuring at least one brain signal of the at least one brain signal measurement target on the basis of the transferred measurement signal, by a measurement unit.