The OISM Series optical Isolator is a passive device that passes light in the normal direction while blocks light in the reverse direction for any state of polarization. Employing Photonwares’s advanced all glass micro optics design, it features ultra-low insertion loss, high power handling high isolation, ultra-mini structure, and high stability. The device is RoHS compliant and Telcordia qualified, an ideal choice for applications in fiber amplifiers, pump lasers and optical fiber sensors.