Abstract: A solder mountable package assembly (1) for securing a passive fiber optic component (12) to a printed circuit board (PCB) according to the present invention includes a package (10), the fiber optic component, and a plurality of pins (11). The package includes a housing (102), a pair of caps (104) closing openings at the ends of the housing, and rubber boots 106 protecting optical fibers entering the housing. The pins are fixed to a bottom of the housing by soldering and the fiber optic component is assembled inside the housing and caps. The package assembly can be fixed to the PCB by inserting the pins through corresponding through holes in the PCB and soldering the pins to the through holes.

Abstract: An optical isolator includes a first pigtail assembly, a first collimating lens aligned with the first pigtail assembly, an optical rotator assembly, an adjustable assembly aligned with the rotator assembly, and a second pigtail assembly having a ferrule and a second optical fiber with an end attached within the ferrule. The rotator assembly includes a first birefringent wedge, an optical rotator and a magnet. The adjustable assembly includes a second birefringent wedge, a second collimating lens, and a holder holding at least a portion of the second birefringent wedge and at least a portion of the second collimating lens therein. The magnet of the rotator assembly encloses the first birefringent wedge and the rotator. The rotator is positioned between the first and second birefringent wedges. The adjustable assembly is adjustable relative to the rotator assembly. This achieves precise positional relationships among the rotator and the first and second birefringent wedges.

Abstract: A high isolation gain flattening filter component includes the optical isolator with the built-in gain flattening filter (GFF) component which is disposed between the isolator core and one of the collimators wherein said isolator core includes a pair of birefringent crystals with therebetween a Faraday rotator together enclosed in a magnetic ring.

Abstract: An optical isolator includes a first pigtail assembly, a first collimating lens aligned with the first pigtail assembly, an optical rotator assembly, an adjustable assembly aligned with the rotator assembly, and a second pigtail assembly having a ferrule and a second optical fiber with an end attached within the ferrule. The rotator assembly includes a first birefringent wedge, an optical rotator and a magnet. The adjustable assembly includes a second birefringent wedge, a second collimating lens, and a holder holding at least a portion of the second birefringent wedge and at least a portion of the second collimating lens therein. The magnet of the rotator assembly encloses the first birefringent wedge and the rotator. The rotator is positioned between the first and second birefringent wedges. The adjustable assembly is adjustable relative to the rotator assembly. This achieves precise positional relationships among the rotator and the first and second birefringent wedges.