Patent ID: 9207063
Filing Date: 2015-12-08
Classification: G01B,G01N,H01S

Abstract:
1. An optical coherence tomography using an active mode-locking fiber laser in order to obtain image information of a sample, comprising: a light source unit emitting light having a center wavelength which is periodically changed by a modulation signal received from outside of a resonator; a light separation unit separating light having a single path, which is emitted from the light source unit, into a first light and a second light having different paths; a reference unit disposed on a path through which the first light separated by the light separation unit progresses, and reflecting the first light; a diagnostic unit having the sample mounted thereon, disposed on a path of the second light separated by the light separation unit, and the second light is delayed more than the first light for a certain time to reflect the delayed light; a light coupling unit coupling the first light and the second light, which are progressed in different paths through the reference unit and the diagnostic unit, and in which mutual interference is generated therefrom; and a signal processing unit detecting and imaging data of the light received from the light coupling unit, wherein the light source unit, in which a plurality of resonators are connected in parallel, receives the modulation signal through the electro optical device disposed in the connection area of the resonators.