Introducing to Fiber Optic Tapers…

Fiber optic tapers are unique fiber optic components, used either to magnify or minify an image. In the taper manufacturing process, a cylindrical fiber blocked is premade, the central zone of the block is heated, and the taper is stretched. The resulting hourglass-shaped piece is cut into two pieces and machined into tapers.

Fiber optic tapers offer compact and lensfree solutions to applications such as CCD coupling, medical imaging, and scientific imaging.

  • Magnification Ratio:
    The image magnification ratio is the ratio of the diameters of the large and small ends of the Taper. Since light can pass through the taper in either direction, it serves equally well as both a concentrator and magnifier. Typical magnification ratios for SZPHOTON tapers range up to 6:1.
  • Fiber size (diameter):
    Also called fiber pitch, this refer to the single fiber diameter on the large end of FOT. 
  • Taper Height:
    The vertical length of the taper. It is usually equal to the diameter of the big end.
  • Numerical Aperture:
    The larger the N·A is, the greater of luminous flux will be entering the fiber-optic image element

sFOT and hFOT are made with different manufacturing procedure,material amd machinery (fixture,furnace,cooling etc..)

sFOT:
sFOT are coming with magnification ratio from 1.5x-3.0x. Fabricating with standard materials and protocols.
Taper height is very close to the diameter of large end.
Low defect rate, prices are relatively low.

hFOT:
hFOT are coming with magnification ratio from 3.1x-6.0x. Using a modified material, special furnace and algorithm for temperature control.
Taper length could made lower than its large end diameter. (e.g. 70% ~ 90%).
Higher defect rate, and prices are higher.

1.5x – 3x Standard Fiber Optic Taper (sFOT) >
– Mature Product, Economic Pricing
– Lower Distortion

3.1x-6x High Mag Fiber Optic Taper (hFOT) >
Experimental Product, Higher Pricing
– More Compact than sFOT
– Higher Distortion

Fiber Optic Taper Array (FOTA) >
– Suitable when you need a large surface (And single taper price goes too high)
– Bonding Multiple FOTs together to make a Taper array.
– An example of removing bonding gaps with deep-learning.

Coupling to CMOS/CCD >
– Remove Protection Window on Sensor
– Using suitable optical adhesive bonding Taper Small End to Sensory Surface
– Sourcing Equivalent CCD/CMOS (Optional)