A laser guide optical fiber (100) used for transmitting a laser beam includes an optical fiber body (110) including a core (111) and a clad (112), and a quartz chip (120) integrally provided at an end surface on the light entering side of the optical fiber body (110) and including an optical waveguide...http://www.google.com/patents/US8023785?utm_source=gb-gplus-sharePatent US8023785 - Laser guide optical fiber and laser guide including the same
