摘要:
A fiber optical circulator in which is a light beam is fed from a fiber of a first port in a dual core glass capillary, then collimated before being passed to a birefringent crystal wherein the light beam is divided into two orthogonal components o and e with a displacement. The State of Polarization (SOP) of components then are changed into the same, perpendicular to the incident plane of the birefringent crystal prism by the group of Faraday Rotator and two Half-Wave Plates (HWP) that have different optical axis orientation and cover o and e components respectively. Then the light components with the same SOP pass into a birefringent prism where they receive angle correction to meet receiving requirement in incident angle for the fiber of port 2 without displacement due to their SOP. This is followed by a second group of HWP and Faraday Rotator that changes the SOP of two components back to orthogonal. The light beam of components then pass into the second birefringent crystal which combines the o and e components together and pass through collimator lens, and are received by optical fiber of the second port. The optical path from the second port to the third port is similar to that described above. However, due to the non-reciprocal property of the Faraday Rotator, the SOP of the two light components from the second port will be in the incident plane of the crystal prism, therefore receive a displacement after the birefringent crystal prism. This displacement combined with angle correction allows the light from the second port is fed into the fiber of the third port. An alternative design uses a pair of glass prism and a plane crystal to replace the function of crystal prism in the preferred embodiment.
摘要:
A micro structure includes a silicon substrate, an adhesion layer on the silicon substrate, a bias layer on the adhesion layer, and structure layers on the adhesion layer. The two or more structure layers comprise different material compositions and a plurality of holes through at least two of the structure layers. Widths of the plurality of holes are in the range of 0.5-500 nm.
摘要:
This invention discloses an optical collimator lens for collimating an incident light. The collimator lens includes an optical transmission rod substantially formed as an elongated cylinder. The optical transmission rod further includes a first end surface formed as a spherical or aspherical end surface and a second end surface opposite the first end-surface. The second end surface formed as an inclined planar surface having an incline angle &thgr; relative to the optical axis of the optical transmission rod for increasing a return loss from the inclined planar surface. In a preferred embodiment, the inclined planar surface has an incline angle of substantially eight degrees or less or more.
摘要:
This invention discloses an optical interleaver. The optical interleaver includes an input port for receiving an input light beam including a plurality of wavelengths represented by &lgr;1, &lgr;2, &lgr;3, . . . , &lgr;n where n is a positive integer. The interleaver further includes a group of optical elements for decomposing the input light beam into a first light beam including a first set of wavelengths represented by &lgr;1, &lgr;3, &lgr;5, . . . , &lgr;n and a second light beam including of a second set of wavelengths represented by &lgr;2, &lgr;4, &lgr;6, . . . , &lgr;n−1, wherein the first light beam and the second light beam transmitted respectively in a first and second optical paths, and the group of optical elements further decomposing and generating two sets of mutually orthogonally polarized and parallel beam-components from the first beam and second beam. The interleaver further includes an incline angle means coupled to the group of optical elements. The incline angle means is used for projecting the two sets of mutually orthogonally polarized and parallel beam-components for the first and second beams respectively with a first incline angle and second incline angle relative to an optical axis of the interleaver. And, the interleaver further includes an output beam-component combining means for combining the mutual orthogonally polarized and parallel beam-components into a first output beam and a second output beam projected with the first and second incline angles respectively relative to the optical axis of the interleaver. In a preferred embodiment, the interleaver further includes a dual fiber collimator having a first optical fiber and a second optical fiber disposed off-axis of the collimator for directly receiving the first output beam and the second output beam projected respectively with the first and second inclined angles.
摘要:
A method for establishing an animal model of hepatocellular carcinoma (HCC) bone metastasis, the method including: 1) establishing 97H and LM3 cell clones with stable expression of firefly luciferase (LUC); 2) allowing HCC cells to form bone metastasis in nude mice via intratibial injection; 3) reproducing HCC bone metastasis in nude mice via intracardiac injection of tumor cells; and 4) isolating a sub-population of tumor cells that targets metastasis to bone. The 97H and the LM3 are highly metastatic HCC cell lines transfected with luciferase gene. BALB/cA-nu mice are 4-5 weeks old and maintained in laminar flow cabinets under SPF conditions and received human care throughout an entire study. A cell number for intratibial injection is 0.5×106, and a cell number for intracardiac injection is 1×106.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
New and improved applications of Raman Scattering are disclosed. These applications may be implemented with or without using an enhanced nano-structured surface that is trademarked as the RamanNanoChip™ disclosed in a pending patent. As a RamanNanoChip™ provides much higher sensitivity in SERS compared with conventional enhance surface, broader scopes of applications are now enabled and can be practically implemented as now disclosed in this application. Furthermore, a wide range of applications is achievable as new and improved Raman sensing applications. By applying the analysis of Raman scattering spectrum, applications can be carried out to identify unknown chemical compositions to perform the tasks of homeland security; food, drug and drinking materials safety; early disease diagnosis; environmental monitoring; industrial process monitoring, precious metal and gem authentications, etc.
摘要:
New and improved applications of Raman Scattering are disclosed. These applications may be implemented with or without using an enhanced nano-structured surface that is trademarked as the RamanNanoChip™ disclosed in a pending patent. As a RamanNanoChip™ provides much higher sensitivity in SERS compared with conventional enhance surface, broader scopes of applications are now enabled and can be practically implemented as now disclosed in this application. Furthermore, a wide range of applications is achievable as new and improved Raman sensing applications. By applying the analysis of Raman scattering spectrum, applications can be carried out to identify unknown chemical compositions to perform the tasks of homeland security; food, drug and drinking materials safety; early disease diagnosis; environmental monitoring; industrial process monitoring, precious metal and gem authentications, etc.