The polarizers 3 and 4, which are bonded to both faces of {HEAD ~ the Faraday rotator} 2, are disposed such that the respective directions of {TAIL ~ transmitted polarization} are offset from each other about the optical axis L by a predetermined angle  
The polarizers 3 and 4 , which are bonded to both faces of { HEAD ~ the Faraday rotator } 2 , are disposed such that the respective directions of { TAIL ~ transmitted polarization } are offset from each other about the optical axis L by a predetermined angle
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH