A compact, wavelength-stabilized laser source is provided by utilizing a specialty gain element (i.e., formed to include a curved waveguide topology), where a separate wavelength stabilization component (for example, a fiber Bragg grating (FBG)) is used one of the mirrors for the laser cavity. That is, the FBG takes the place of the physical “front facet” of the gain element, and functions to define the laser cavity in the first instance, while also utilizing the grating structure to impart the desired wavelength stability to the output from the packaged laser source. As a result, the FBG is disposed within the same package used to house the gain element and provides a wavelength-stabilized laser source in a compact form.

A fiber connector, comprising a housing having a chamber extending in a lengthwise direction from a first end configured to receive a fiber to a second end configured to connect the fiber to a laser processing head and a channel disposed on an exterior surface of the chamber, the channel comprising a double helical structure.

In one example embodiment, an optoelectronic assembly includes an electronic substrate, a transparent component coupled on a first side of the electronic substrate, and a first component coupled to a second side of the electronic substrate opposite the first side. The electronic substrate, the transparent component, and the first component may define a hermetically sealed enclosure. A laser array or a receiver array may be mechanically coupled to the transparent component inside of the enclosure and oriented to transmit or receive optical signals through the transparent component. The laser array or the receiver array may be electrically coupled to the electronic substrate. A second component may be positioned between the first component and the transparent component in the hermetically sealed enclosure with a thermal interface material forming a first interface between the second component and the transparent component.

Disclosed are methods of providing a hermetically sealed optical connection between an optical fiber and an optical element of a chip and a photonic-integrated chip manufactured using such methods.

This disclosure generally relates to high-speed fiber optic networks that use light signals to transmit data over a network. The disclosed subject matter includes devices and methods relating to multi-lens optical components and/or optoelectronic subassemblies. In some aspects, devices and methods relate to an optical component including a housing defining a cavity and a lens array having a plurality of lenses on an optically transmissive portion of the housing. In some aspects, devices and methods relate to an optical component including a substrate; and a lens array on the substrate, the lens array having a plurality of discrete lenses.

A fiber optic directional sensor has a substantially hemispherical dome surface and a substantially flat surface. The sensor is formed from a plurality of optical fibers fused to one another, and each optical fiber extends from the dome surface to the flat surface. One end of each optical fiber is substantially perpendicular to the sensor's dome surface, and the opposite end of the fiber is substantially perpendicular to the sensor's flat surface such that an end face of the fiber is substantially tangent to the dome surface, and another end face of the fiber is substantially tangent to the flat surface. The sensor further includes an optical element which expands the field of view of the sensor and chromatically controls the incoming light. Using the sensor, light from projectiles, such as missiles, bullets, and other weaponry, can be detected, and the locations of the projectiles can be determined.

A connector joins the core of at least one optical fiber to the core of another fiber in a manner that is functional and leaktight against the external media, including: a cylindrical body, whose inner portion includes an insert provided with longitudinal through-holes or through-conduits; at least one optical linkage device including a cylindrical ferrule, generally made of ceramic, pierced for the passage of the core of the fiber, and a ferrule holder joined to the end of the associated fibre and providing the mechanical linkage between the ferrule and the insert; and an O-ring seal provided between the ferrule holder and the receiving conduit of the insert. The body of the connector and the insert form a monobloc assembly, either realized as a single piece or realized with the aid of two complementary pieces, fixed to each other in a totally leaktight or hermetic fashion.

A device may include a first substrate. The device may include an optical source. The optical source may generate light when a voltage or current is applied to the optical source. The optical source may be being provided on a first region of the first substrate. The device may include a second substrate. A second region of the second substrate may form a cavity with the first region of the first substrate. The optical source may extend into the cavity. The device may include an optical interconnect. The optical interconnect may be provided on or in the second substrate and outside the cavity. The optical interconnect may be configured to receive the light from the optical source.

An optical module includes a waveguide interposer and at least one light source unit. The waveguide interposer includes at least one input terminal, at least one waveguide channel, and at least one output terminal. The at least one input terminal is configured to receive laser light, and the at least one waveguide channel is coupled to the at least one input terminal and is configured to guide the laser light. Each light source unit is configured to output the laser light to a corresponding input terminal of the at least one input terminal.

A passive optical network includes a central office providing subscriber signals; a fiber distribution hub including an optical power splitter and a termination field; and a drop terminal. Distribution fibers have first ends coupled to output ports of a drop terminal and second ends coupled to the termination field. A remote unit of a DAS is retrofitted to the network by routing a second feeder cable from a base station to the hub and coupling one the distribution fibers to the second feeder cable. The remote unit is plugged into the corresponding drop terminal port, for example, with a cable arrangement having a sealed wave division multiplexer.