Low -loss broad -band light learns isolator

The utility model discloses a low -loss broad -band light learns isolator, include: an optical collimator to first light filter, third light filter, the 5th light filter and the 7th light filter thatrow set up, the second light filter, fourth light filter, the 6th light filter and the 8th light filter that set up side by side, it is first to fourth isolator core and the 2nd optical collimator. The utility model provides an adopt birefringence and film interference principle to realize forward transmission light, reverse isolation light, not only small, the optical loss is low moreover, can cover whole wave band, realizes that same collimater is all exported to the all band, therefore the suitability is stronger. 本实用新型公开种低损耗的宽带光学隔离器，包括：第光纤准直器，并列设置的第滤光片、第三滤光片、第五滤光片以及第七滤光片，并列设置的第二滤光片、第四滤光片、第六滤光片以及第八滤光片，第至第四隔离器芯以及第二光纤准直器。本实用新型提供采用双折射以及薄膜干涉原理来实现正向传输光，逆向隔离光，不仅体积小，而且光学损耗低，能够覆盖整个波段，实现全波段全部输出到同个准直器中，因而适用性更强。