Abstract: An Optical Coherence Tomography (OCT) device is applicable to an endoscopic measuring system. The OCT device comprises at least one light source and at least one cascaded interferometer arrangement having at least a first interferometer configured to receive light emitted by the light source and at least a second interferometer. The second interferometer is arranged behind the first interferometer with respect to an optical path of the OCT device. The OCT device further includes at least one image sensor, and at least one image fiber arranged between the cascaded interferometer arrangement and the image sensor with respect to the optical path of the OCT device. The image fiber is configured to receive at least one interferometric image output by the second interferometer and to transmit the interferometric image towards the image sensor for detection of the interferometric image by means of the image sensor.