METHOD OF OPTICAL FIBER CORE POSITIONING OVER PHOTODETECTOR LIGHT-SENSING FIELD Russian patent published in 2018 - IPC G02B6/42 

FIELD: optics.

SUBSTANCE: invention relates to the field of optical technology and relates to a method for positioning the core of an optical fiber over the photosensitive region of a photodetector. Method includes bringing the core of the optical fiber to the surface at a distance nλ/2+λ/4, after which the optical fiber core is moved parallel to the surface of the photodetector until a minimum of intensity corresponding to the first track of the electrical contact is reached. Further, the optical fiber core is moved in the direction of the track to the photosensitive region of the photodetector until the intensity corresponding to the end of the first track of the electrical contact and further until the moment of diminishing the intensity corresponding to the beginning of the second track of the electrical contact is established and the core is set in the middle, between the first and second tracks of electrical contacts. Then, similar actions are performed for other axes corresponding to other pairs of tracks of electrical contacts. When carrying out measurements, light propagating through the cortex of an optical fiber is used whose wavelength is chosen equal to four times the thickness of the tracks of electrical contacts.

EFFECT: technical result is improved accuracy of positioning.

1 cl, 4 dwg