摘要:
Various embodiments of free-space fiber waveguide connectors, feed-throughs and GRIN lens assemblies and methods of bonding GRIN lenses in, and aligning waveguide fibers to, such connectors, feed-throughs and assemblies. In one embodiment, a free-space fiber waveguide connector includes: (1) an insert having a waveguide fiber bonded in a fiber mount attached proximate one end of the insert and an angle-faced GRIN lens attached proximate an opposing end of the insert and (2) a lens collar attached to the GRIN lens, the one end defining a reference plane and a virtual axis of the GRIN lens perpendicular to the reference plane, the fiber mount adjustable to a reflection from a reflective surface bonded parallel to the reference plane.
摘要:
A GRIN-lensed, tuned wedge waveguide termination, a method of reducing back reflection to a waveguide caused by the GRIN-lensed, tuned wedge waveguide termination and a terminated optical fiber. In one embodiment, the GRIN-lensed, tuned wedge waveguide termination includes: (1) a GRIN lens subassembly including a GRIN lens having a pitch greater than a quarter pitch such that a primary beam propagating through the GRIN lens subassembly forms a waist and (2) a tuned wedge subassembly bonded to the GRIN lens subassembly and having a length selected such that the tuned wedge subassembly ends at least proximate the waist, the tuned wedge subassembly further having a bevel angle selected to reduce a back reflection into the waveguide.
摘要:
An N×M monolithic switch and a method of operating the switch. In one embodiment, the switch includes: (1) a monolithic refractive element, (2) N input/output ports coupled to the monolithic refractive element and configured to inject electromagnetic energy into a first set of planes in the monolithic refractive element at an angle that causes total internal reflection of the electromagnetic energy between first and second refractive surfaces of the monolithic refractive element, N being greater than one, (3) M input/output ports coupled to the monolithic refractive element and configured to extract electromagnetic energy travelling in a second set of planes in the monolithic refractive element, M being greater than one, the second set of planes being aparallel to the first set of planes and (4) a plurality of frustrating elements coupled to the monolithic refractive element and corresponding to the N input/output ports and the M input/output ports and configured to frustrate the total internal reflection selectively to cause the electromagnetic energy to travel from ones of the first set of planes to ones of the second set of planes.