an optical fiber connector can be easily and quickly assembled by mounting the end of an optical fiber in a thermoplastic adhesive that is heated to a viscosity of between 1000 and 10 , 000 cp , has an adhesion - to - glass value of at least 10n , and a shore d hardness of at least 60 at 20 ° c . the optical fiber connector lends itself to mass - production techniques and can be reused by heating to liquify the thermoplastic adhesive .