The photosensitive polymer includes a first monomer which is norbornene ester having C1 to C12 aliphatic alcohol as a substituent, and a second monomer which is maleic anhydride. The optical fiber has an exposed end which is coated with metal. A separation plate is provided and is configured to remove the transfer medium. The absorbent material comprises absorbent gelling particles comprising a water-insoluble absorbent hydrogel-forming polymer; a polycationic polymer bonded to the absorbent gelling particles at the surface thereof; glue microfibers dispersed in the absorbent gelling particles; and a carrier layer bonded to the absorbent gelling particles through the glue microfibers.