Abstract: A wavelength-division multiplexing (WDM) optical assembly with increased lane density is disclosed herein. The WDM optical assembly includes a WDM optical core subassembly including an optical signal router for routing an optical signal between a first side and a second side of a substrate. The WDM optical core subassembly further includes a first WDM filter having a first passband and a second WDM filter having a second passband. The WDM optical core subassembly forms a first optical path between a first common port, the first WDM filter, and a first channel port, and to form a second optical path between the second WDM filter, a second common port, and a second channel port. The WDM optical core subassembly increases lane density while decreasing size and complexity by including a plurality of common ports in optical communication with the same plurality of WDM filters.

Abstract: Techniques for micro-optics alignment and assembly are described. By attaching a needle pin to an optical component to be assembled, the optical component can be placed and aligned within a limited space. After the aligned optical component is permanently bonded to a substrate or to another component, the needle pin is detached from the component. This technique allows a user to place and align a small optical component to a right position.

Abstract: An optical transceiver module having unibody structure is disclosed. The unibody structure comprises a single-piece substrate, an optical interface, and an optical engine. The components of the optical interface and the components of the optical engine are directly attached to the single-piece substrate.

Abstract: A multiplexer/demultiplexer is provided comprising a capillary filter block, a capillary adhesive, a signal-routing block, and an index-matching adhesive. The capillary adhesive resides in the capillary interstices of the capillary filter block and the index-matching adhesive forms an optical and mechanical interface between the signal-routing block and the capillary filter block. The layer thickness of the index-matching adhesive accommodates for extra-planar surface irregularities in the bonding face of the signal routing block and extra-planar variations along the proximal ends of the component filter blocks of the capillary filter block.

Abstract: An optical transceiver module having unibody structure is disclosed. The unibody structure comprises a single-piece substrate, an optical interface, and an optical engine. The components of the optical interface and the components of the optical engine are directly attached to the single-piece substrate.

Abstract: Techniques for micro-optics alignment and assembly are described. By attaching a needle pin to an optical component to be assembled, the optical component can be placed and aligned within a limited space. After the aligned optical component is permanently bonded to a substrate or to another component, the needle pin is detached from the component. This technique allows a user to place and align a small optical component to a right position.

Abstract: Techniques for designing compact free-space optical device with all input/output ports on one side are disclosed. Instead of folding a fiber, a beam folding means is provided to turn a light beam to significantly reduce the size of the device. In one embodiment, there are a first collimator, a second collimator, and a beam folding means to turn a light beam from the first collimator back to the second collimator by two turns so that a first light path from the first collimator to the beam folding means and a second light path from the second collimator to the beam folding means are parallel. A substrate is provided to which the first and second collimators and filters are boned thereto.

Abstract: Filters shaped differently from those commonly used in WDM Mux/DeMux optical devices are described. Different from the prior art devices that commonly use filters shaped in cuboid, the filters in the embodiment of the present invention are shaped in parallelepiped. In other words, a cross section of such filter is not in parallelogram. According to one embodiment of the present invention, a filter is so cut that a cross section thereof presents a cutting angle not being 90 degrees. As a result, the filter is fully used in WDM Mux/DeMux optical devices. Such filters are advantageously used in compact optical modules.

Abstract: Filters shaped differently from those commonly used in WDM Mux/DeMux optical devices are described. Different from the prior art devices that commonly use filters shaped in cuboid, the filters in the embodiment of the present invention are shaped in parallelepiped. In other words, a cross section of such filter is not in parallelogram. According to one embodiment of the present invention, a filter is so cut that a cross section thereof presents a cutting angle not being 90 degrees. As a result, the filter is fully used in WDM Mux/DeMux optical devices. Such filters are advantageously used in compact optical modules.

Abstract: Disclosed herein is a method for generating a three-dimensional structure on a surface. The method comprises forming a layer comprising a plurality of nanoparticles on a surface; and exposing a portion of the layer to incident radiation having a defined pattern at a dosage effective to aggregate the nanoparticles in the exposed portion of the layer into a three-dimensional structure, wherein the three-dimensional structure has a shape defined by the pattern of the radiation and a height defined by the dosage of the incident radiation and a thickness of the nanoparticle layer. Alternatively, the method comprises forming a layer comprising a plurality of nanoparticles on a surface of a three-dimensional template; and exposing at least a portion of the layer to incident radiation at a dosage effective to aggregate the nanoparticles in the exposed portion of the layer into a three-dimensional structure that corresponds to the three-dimensional template.

Abstract: Disclosed herein is a method for generating a three-dimensional structure on a surface. The method comprises forming a layer comprising a plurality of nanoparticles on a surface; and exposing a portion of the layer to incident radiation having a defined pattern at a dosage effective to aggregate the nanoparticles in the exposed portion of the layer into a three-dimensional structure, wherein the three-dimensional structure has a shape defined by the pattern of the radiation and a height defined by the dosage of the incident radiation and a thickness of the nanoparticle layer. Alternatively, the method comprises forming a layer comprising a plurality of nanoparticles on a surface of a three-dimensional template; and exposing at least a portion of the layer to incident radiation at a dosage effective to aggregate the nanoparticles in the exposed portion of the layer into a three-dimensional structure that corresponds to the three-dimensional template.