Abstract:
A method to fabricate an optical scattering probe and the method includes the steps of a) depositing an conductive layer on a substrate followed by depositing a noble metal layer on top of the conductive layer and then an aluminum layer on top the noble metal layer; b) anodizing the aluminum layer to form a porous aluminum oxide layer having a plurality of pores; and c) etching the plurality of pores through the aluminum oxide layer and the noble metal layer for forming a nano-hole array. In a preferred embodiment, the step of etching the plurality of pores through the aluminum oxide layer and the noble metal layer further comprising a step of widening the pores followed by removing the aluminum oxide layer for forming a plurality of noble metal column on top of the conductive layer.
Abstract:
This invention discloses an optical collimator that includes a built-in tap-out projection optical arrangement for projecting a portion of an incoming beam to a tap-out beam-transmission fiber. In one of the preferred embodiments, the built-in tap-out projection optical arrangement further includes a front surface having an incline angle for projecting a portion of an incoming beam to a tap-out beam transmission fiber. In another preferred embodiment, the built-in tap-out projection optical arrangement further includes a prism having a pair of inclined front surfaces for projecting the incoming beam into an output beam and a tap out beam. In yet another preferred embodiment, the built-in tap-out projection optical arrangement further includes a partially reflective front surface and a reflective mirror projecting the incoming beam into an output beam and a tap out beam. This invention disclosure a dual beam collimator that provides two parallel each other beam with adjustable distance between them in the same diameter as single beam collimator. The dual beam collimator can be expanded into multiple beam collimator also.
Abstract:
This invention discloses an optical circulator. The optical circulator includes a first set of optical components having a birefringent crystal, a pair of half wave plates and the Faraday rotator to separate and then polarize the light beam into projection-direction ready polarization components. These projection-direction ready polarization components are suitable for entering into a projection-direction optical-processing-optical device, e.g., a Wollaston prism, to generate the projecting-to-exit-port beam components. The circulator then employs a set of reciprocal components of the first set of optical components to carry out reciprocal polarization rotations and beam component merging processes to transmit an output beam to the exit port by projecting the beam components and the merged beam along the projecting-to-exit port direction.