Abstract: A reconfigurable fiber optic adapter for connecting male and female optical fiber connectors is disclosed to include a housing having two recessed located in opposing top and bottom sides of one end thereof and opposing first and second keyways located in opposing top and bottom sides of a optical fiber connector passage therein, and a first mating-connection control member with an On key and a second mating-connection control member with an OFF key selectively exchangeably mounted in the two recesses of the housing for controlling the insertion direction of a male optical fiber connector.

Abstract: A mono-block type optical fiber adapter includes an adapter body including a partition wall between each two opposing accommodation chambers and a tubular coupling portion extended from each partition wall toward the inside of one respective front-sided accommodation chamber, a ferrule mounted in each tubular coupling portion and partially suspending in the respective rear-sided accommodation chamber, and a ferrule holder respectively mounted in each rear-sided accommodation chamber and attached to the suspended rear end of the respective ferrule. The one piece design of the adapter body facilitates mass production and effectively eliminates the dimensional tolerance and clearance problems of conventional designs. Further, the matching design between the adapter body and the ferrule holders facilitates quick and accurate installation of the mono-block type optical fiber adapter, saving much installation time and labor and enhancing structural stability and reliability.

Abstract: Designs of 2-port optical devices are disclosed. The optical devices so designed are amenable to small footprint, enhanced impact performance, lower cost, and easier manufacturing process. The optical device comprises at least two collimators, each of the collimators including: a single-mode fiber, and a multi-mode graded index fiber, aligned with the single-mode fiber in a way that the multi-mode graded index fiber and the single-mode fiber are spliced together, wherein the multi-mode graded index fiber is designed to have a predefined length.

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: An optical fiber connector assembly includes a receptacle, two connectors accommodated in respective accommodation grooves in the receptacle and having a respective clip located at a top side thereof for engagement with a respective retaining groove in a mating optical fiber adapter, an optical fiber cable having two optical fibers respectively mounted in the connectors, and a sliding cover covered on the receptacle and movable relative to the receptacle to elastically deform the clips and to further disengage the clips from the respective retaining grooves of the optical fiber adapter for allowing removal of the optical fiber connector assembly out of the optical fiber adapter with less effort.

Abstract: Techniques for monitoring optical power, dispersion and mode distribution in high speed multimode fiber are described. According to one aspect of the present invention, a multimode optical tap filter is disclosed. The tap filter is dispersionless and tap ratio independent, and packaged in a 3-port form factor. To be efficient in cost, at least two such optical tab filters are packaged in one device while sharing a single thin film filter provided to reflect a predefined portion of a signal being monitored.

Abstract: Techniques for monitoring optical power, dispersion and mode distribution in high speed multimode fiber are described. According to one aspect of the present invention, a multimode optical tap filter is described. In one aspect of the present invention, an optical tap filter is a dispersionless optical tap filter in bi-directional multimode fiber optic link. The optical tap filter includes at least two parts optically engaged with a broadband thin film filter and taps out a monitoring signal from a communication signal according to a ratio set by the broadband thin film filter.

Abstract: An apparatus and method for splitting and controlling optical powers provided by an input fiber and received by a plurality of output fibers comprises: (a) providing a first collimated beam from the input fiber using a first lens; (b) splitting the first collimated beam into a plurality of separated collimated beams having different directions using a collimated beam splitting device; (c) controlling area of each separated collimated beam by moving the collimated beam splitting device on a plane perpendicular to the first collimated beam; and (d) focusing the plurality of separated collimated beams using a second lens and coupling the focused beams into the plurality of output fibers, respectively.

Abstract: Designs of pluggable optical passive devices are described. Such a pluggable optical passive device can be inserted into an existing configuration. According to one embodiment, the pluggable optical passive device is formed as an elongated enclosure with one or two first connectors on one side thereof and one or two second connectors on the other side thereof. The first connectors are provided to be coupled to female pluggers while the second connectors are provided to be coupled to male pluggers. Depending on implementation, the first and second connectors may be glued onto or skewed into the enclosure through holes, and may be further extended by a flexible pigtailed dual LC connector.

Abstract: A pluggable platform in small form factor is described. In one embodiment, the pluggable platform is designed to accommodate passive optical devices and may retrofit into an existing system. Further, the pluggable platform in small form factor is provided with an interface for tractability of the passive optical devices being supported.

Abstract: Micro-optic filtering devices and the method of making the same are described. In one aspect, the invention is related to techniques of obtaining low-loss coupling optics, packaging structure and process to secure components constituting a micro-optic fiber device. To support and fix various components in a fiber optic device, tubes are used to facilitate the manufacturability of these optical devices. These tubes may be metal tubes or glass tubes.

Abstract: Techniques for WDM Mux/DeMux on cable and methods of making the same are described According to one aspect of the present invention, a unit designed to provide multiplexing or demultiplexing (Mux/Demux) functions is implemented on cable. In other words, the Mux/Demux unit is coupled by a multi-fiber cable to a system (e.g., a system rack for router or switch that has multiple pluggable transceiver slots).

Abstract: New designs of optical devices, particularly for dropping a selected wavelength or a group of wavelengths as well as demultiplexing a multiplexed signal into several signals, are disclosed. An optical device employs thin film filters with reflectors to reassemble as a fiber Bragg grating. Depending on implementation, a reflector may be a mirror or a coated substrate disposed in a unique way to reflect a light beam from a filter back to a common port of a device. The reflector may also be coated accordingly to bypass a certain portion of the light beam for other purposes. As a result, the optical devices so designed in accordance with the present invention are amenable to small footprint, enhanced impact performance, lower cost, and easier manufacturing process.

Abstract: Techniques for designing optical devices that can be manufactured in volume are disclosed. In an exemplary an optical assembly, to ensure that all collimators are on one side to facilitate efficient packaging, all collimators are positioned on both sides of a substrate. Thus one or more beam folding components are used to fold a light beam up and down through the collimators on top of the substrate and bottom of the substrate.

Abstract: Designs of optical devices providing multiplexing or demultiplexing functions are disclosed. According to one embodiment, an optical device or an assembly employs an array of micro lenses, an array of filters and a mirror or an array of mirrors all bonded onto a substrate to provide multiplexing or demultiplexing functions. To compensate for possible errors caused by some or all of these components, one or more compensatory optical plates are provided to respectively correct these errors. Depending on implementation, the compensatory optical plates may be designed differently to correct various errors.

Abstract: Various designs of pluggable variable optical attenuator (VOA) are disclosed. A pluggable VOA has an optical fiber adaptor connected to an internal VOA via different fiber optical interface configurations. At least a pair of ports is provided to accept optical fibers or external optical fiber ferrules for optical pluggability. The VOA is controlled electronically or manually. To facilitate a control of the VOA via a hosting system, an electronic device and/or interface is provided. External commands take the control of the VOA and set an attenuation level within a specification when the pluggable variable optical attenuator device is connected to a hosting system.

Abstract: The present invention is related to designs of optical devices for combining optical signals or sources at different wavelengths to generate depolarized outputs combining the optical signals. According to one aspect of the present invention, an optical apparatus comprises N different inputs, each having a wavelength and a combining mechanism receiving the N different inputs and combining the N different inputs to produce N outputs, each of the outputs being coupled to a series of optical recirculation depolarizers to produce combined and depolarized outputs.

Abstract: Designs of optical devices providing multiplexing or demultiplexing functions are disclosed. According to one embodiment, an optical device or an assembly employs an array of micro lenses, an array of filters and a glass block all bonded onto a substrate to provide multiplexing or demultiplexing functions. To compensate for possible errors caused by some or all of these components, one or more compensatory optical plates are provided to respectively correct these errors. Depending on implementation, the compensatory optical plates may be designed differently to correct various errors.

Abstract: New designs of optical devices, particularly for adding or dropping a selected wavelength or a group of wavelengths as well as multiplexing a plurality of signals into a multiplexed signal or demultiplexing a multiplexed signal into several signals are disclosed. According to one aspect of the present invention, an isolator core is built into the optical devices to stop a reflected signal from an optical file in the optical devices. As a result, the optical devices are amenable to small footprint, broad operating wavelength range, enhanced impact performance, lower cost, and easier manufacturing process.

Abstract: Techniques for designing optical devices that can be manufactured in volume are disclosed. In an exemplary an optical assembly, to ensure that all collimators are on one side to facilitate efficient packaging, all collimators are positioned on both sides of a substrate. Thus one or more beam folding components are used to fold a light beam up and down through the collimators on top of the substrate and bottom of the substrate.