Optical fiber ferrule assembly having angular index showing polarization plane

An optical fiber ferrule assembly comprising:

• a polarization plane maintaining optical fiber;
• an optical fiber ferrule for accepting said optical fiber to fixedly hold said optical fiber in a state that its tip portion is exposed;
• an angular index member which is rotatable with respect to said ferrule until said angular index member is fixed at a predetermined angle with respect to a polarization plane of said optical fiber, said angular index member having a central hole which rotatably accommodates said ferrule and having a circumferential section with an index section to indicate said polarization plane of said optical fiber;
• and
• a flange body which is fixedly secured to a portion of said ferrule and which accommodates a coated portion of said optical fiber,
• wherein said optical fiber is fixed to said optical fiber ferrule, said angular index member and said optical fiber ferrule are temporarily assembled, said angular index member is temporarily secured to a stage of a microscope in a state such that said ferrule is in a rotatably supported state, said ferrule is rotated while an enlarged image of a tip end surface of said optical fiber is observed with said microscope, and said angular index member and said ferrule are fixedly adhered when the enlarged image reaches a given relation to said index section of said angular index member, so that said angular index makes said predetermined angle with respect to the polarization plane and indicates said polarization plane of said optical fiber.