This Japanese Industrial Standard specifies test methods of optical isolators used for fiber optic transmission (hereafter referred to as "optical isolators").
JIS C 5933:2012 Referenced Document
JIS C 5860 General rules of passive devices for light beam transmission
JIS C 5877-1 Polarizer -- Part 1: General rule*, 2015-03-20 Update
JIS C 5900 General rules of passive devices for fiber optic transmission*, 2013-03-21 Update
JIS C 5901 Test methods of passive devices for fibre optic transmission
JIS C 60068-1 Environmental testing -- Part 1: General and guidance*, 2016-04-20 Update
JIS C 61300-3-2 Fiber optic interconnecting devices and passive components -- Basic test and measurement procedures -- Part 3-2: Examinations and measurements -- Polarization dependent loss in a single-mode fiber optic device
JIS C 61300-3-6 Fiber optic interconnecting devices and passive components -- Basic test and measurement procedures -- Part 3-6: Examinations and measurements -- Return loss