An optical material having improved heat resistance, in particular, a GI type POF containing a dopant.

POF has been called the consumer optical fiber because the fiber and associated optical links, connectors, and installation are all inexpensive.

The optical cable includes a plastic optical fiber (POF) (34) and a buffer (62) surrounding the POF along a portion of the length of the end of the optical cable.

The optical cable includes a plastic optical fiber (POF) (234) having a tip segment (236) that includes a tip surface (238).

POF (plastic optical fiber) loses much more: 1 dB/m at 650 nm.

The invention also relates to a plastic optical fibre.

An optical module accepts an optical connector plug with plastic optical fiber without a ferrule; and glass optical fiber or smaller diameter plastic optical fiber both with a ferrule.

A plastic optical fiber (3) is passed through the optical fiber through hole (2).

The plastic optical fiber (3) is held between the inner walls (7) of the optical fiber holders (6) from both sides.

Thereby, the thermoplastic resin (32) is coated on the plastic optical fiber (11) without causing stress distribution to the plastic optical fiber (11).

A plastic optical fiber (11) has a core (12) and a clad (13).