Pencil-like optical fiber sensor probe, portable immunosensor and use thereof

A pencil-like optical fiber sensor probe, comprising:

• an inner tube;
• a casing;
• a clamping device;
• an optical fiber;
• and an optical probe;
• wherein the inner tube comprises a head, a screw cylinder and a tail cap;
• a fixing part is provided at an upper end of the screw cylinder, and a guide groove is provided on a sidewall of the screw cylinder;
• and the tail cap is fixed to the fixing part;
• the casing is sheathed on the screw cylinder, and a helix groove is provided on an inner wall of the casing;
• the clamping device is arranged in the screw cylinder;
• a protrusion is provided on an outer wall of the clamping device;
• the protrusion is mounted in the guide groove and then is embedded into the helix groove;
• and
• the clamping device comprises a helix slider, a receiving slider and a mechanical splicer;
• the helix slider and the receiving slider are connected in a snap fit;
• the mechanical splicer is arranged in the connected helix slider and the receiving slider, and the protrusion is provided on an outer wall of the helix slider.
• the optical fiber and the optical probe are coaxially connected in the clamping device.