Alliance Fiber Optic Products, Inc.

Corning Research & Development Corporation

Corning Incorporated

Corning Optical Communications LLC

Dong Gui

Andy Fenglei Zhou

Qijun Xiao

Yao Li

Shudong Xiao

Diana R Rodriguez

Terry Dean Cox

Scott William Ramsdell

Lingling Hu

Zilong Jiang

Pushkar Tandon

James Scott Sutherland

Douglas Llewellyn Butler

Alan Frank Evans

Yu Huang

Xiaotao Peng

A fiber optic assembly is provided including a body defining a fiber routing volume, a plurality of fiber optic components disposed in a front side of the body, and a plurality of optical filters disposed within the volume. The plurality of optical filters enable at least twenty four (24) dense wavelength division multiplexing (DWDM) channels.

Dense wavelength division multiplexing fiber optic apparatuses and related equipment

Disclosed herein are wavelength-division multiplexing devices using different angles of incidence (AOIs) at the WDM filters to provide for variable placement and orientation of WDM filters and channel ports, thereby decreasing the device footprint and allowing for shorter overall optical signal paths to increase signal performance and reliability. Also disclosed are stacked WDM filters for increased signal isolation.

Wavelength-division multiplexing devices with modified angles of incidence

In various embodiments, free-space optical collimator and multi-channel wavelength division multiplexers including free-space optical collimators are provided. In one embodiment, for example, a free-space optical collimator includes a base having a length, a generally flat bottom surface and a top surface. A groove is disposed along the top surface of the base extending through the length of the base. A lens is disposed within the groove of the base and a fiber optic pigtail is disposed generally adjacent to a focal point of the lens. The lens and fiber optic pigtail are aligned within the groove to reduce an off-angle offset of an optical light signal propagating through the free-space optical collimator. In other embodiments, a process of producing a free-space optical collimator is also provided.

Free-space optical collimator

An optical system comprising: an optical assembly having a first optical surface and a rear optical surface, said optical assembly comprising at least three optical elements; an optical fiber comprising a core portion with a mode field diameter (MFD) expanded region optically coupled to the rear optical surface of the optical assembly, the optical fiber comprising a core region doped with chlorine in a concentration greater than 0.5 wt %, wherein the MFD expanded region is less than 5 cm in length, and has MFD at the fiber end coupled to the optical assembly that is a least 20% greater than the MFD at other end of the optical fiber; an optical signal source coupled to first optical surface of the optical assembly, such that the optical signal provided by the optical signal source is routed along an optical path formed by the optical assembly to the mode field diameter expanded region of said optical fiber.

Optical system comprising chlorine doped mode field expanded optical fibers

Disclosed herein are multi-layer wavelength-division multiplexing (WDM) devices that include a first optical signal router to route first demultiplexed signals from a common layer to a first channel layer and a second optical signal router to route second demultiplexed signals from the common layer to a second channel layer.

Multi-layer wavelength-division multiplexing devices

Disclosed herein is a wavelength-division multiplexing device with a unified passband. In particular, disclosed is a wavelength-division multiplexing (WDM) device with at least a common port, a channel port, and a WDM filter. The common port is configured for optical communication of a multiplexed signal to the WDM filter. A demultiplexed signal of the multiplexed signal includes a first secondary demultiplexed signal within a first wavelength range and a second secondary demultiplexed signal within a second wavelength range, which are separated from each other by a third wavelength range. The first WDM filter has a single unified passband including the first wavelength range, the second wavelength range, and the third wavelength range, such that the first WDM filter is configured to pass the first secondary demultiplexed signal and the second secondary demultiplexed signal to the first channel port.

Wavelength-division multiplexing device with a unified passband

The precision TFF POSA is formed by pressing a TFF glass rod array into a top surface of a master glass block to flatten the otherwise curved TFFs formed using conventional TFF deposition processes on glass. The TFF glass rod array is secured to the master glass block with a securing material to form a fabrication structure, which is singulated to form precision TFF POSAs having TFF members with flat TFFs and long TFF member long axes. A fiber interface device is arranged at a back surface of the TFF POSA. Other fiber interface devices having device axes are arranged proximate the TFF members. The device axes are parallel to the TFF member long axes to form a WDM system with a parallel configuration. In this configuration, there is one positionally adjustable fiber interface device for each wavelength channel, which allows for optimizing WDM optical communication in Mux and DeMux directions.

Precision TFF POSA and WDM systems using parallel fiber interface devices

A fiber optic system is provided including a first and second fiber optic assembly, each comprising a body defining a fiber routing volume and a plurality of fiber optic components disposed on the body. The first fiber optic assembly includes a first plurality of optical filters disposed within the first fiber routing volume. The first plurality of optical filters define a first plurality of dense wavelength division multiplexing (DWDM) channels, test channels, an express port, and an upgrade port. A second plurality of optical filters disposed within the second fiber routing volume. The second plurality of optical filters define a second group comprising a second plurality of DWDM channels. The test channels and the express port of the first fiber optic assembly are utilized for both the first fiber optic assembly and the second fiber optic assembly.

A wavelength-division multiplexing (WDM) optical assembly with multiple collimator sets is disclosed herein. The WDM optical assembly includes a WDM optical core subassembly including at least one optical signal router, at least one WDM filter, and a first and second WDM collimator sets. The first WDM collimator set includes a first common optical collimator and at least two channel collimators and the second WDM collimator set includes a second common optical collimator and at least two channel collimators. At least a portion of the first WDM collimator set is optically positioned on a first surface of at least one substrate, and at least a portion of the second WDM collimator set is optically positioned on a second surface of the at least one substrate opposite the first surface. The WDM optical core subassembly increases lane density while decreasing size and minimizing complexity by using a plurality of WDM common ports.

Wavelength-division multiplexing optical assembly with multiple collimator sets

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.

Wavelength-division multiplexing optical assembly with increased lane density

The micro-optical systems disclosed herein employ a glass tube having a body, a front end, a back end, an outer surface, and a bore that runs through the body between the front and back ends and that has a bore axis. The outer surface has a maximum outer dimension between 0.1 mm and 20 mm and includes at least one flat side. At least one optical element is inserted into and operably disposed and secured within the bore. The micro-optical assemblies are formed by securing one or more micro-optical systems to a substrate at the flat side of the glass tube. The glass tube is formed by a drawing process that allows for the dimensions of the glass tube to be small and formed with relatively high precision. An example of a compact WDM micro-optical assembly that employs micro-collimators is disclosed.

Micro-optical systems and assemblies using glass tubes and methods of forming same

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. The capillary filter block can be formed from a plurality of component filter blocks by dicing multiple component filter blocks from a filter block substrate, placing the component filter blocks adjacent to one another, and using capillary force to draw adhesive between adjacent sidewalls of component filter blocks.

MUX/DEMUX comprising capillary filter block and methods of producing the same

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.

Optical transceiver module having unibody structure

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.

Growing community of inventors

San Jose, CA, United States of America

Dong Gui