Fig. 3: Bird’s-eye optical image of the chip-integrated POF wearable sensing system. | Communications Engineering

Fig. 3: Bird’s-eye optical image of the chip-integrated POF wearable sensing system.

From: Miniature optical fiber curvature sensor via integration with GaN optoelectronics

Fig. 3: Bird’s-eye optical image of the chip-integrated POF wearable sensing system.The alt text for this image may have been generated using AI.

“A” part is the reflection end, forming a coaxial reflection in the fiber link. The inset image “I” shows a mirror attached to the fiber end facet. “B” part is the sensing unit, and the inset image “II” shows a D-shaped structure fabricated on the POF with a diameter of 628 μm. “C” part includes the elements of emitter and receiver, where a lens formed by high refractive glue is deposited on the emitter and receiver for beam convergence (III), and the encapsulation of optoelectronic chip and POF is implemented by a housing (IV).

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