Abstract: An optical system has a beam-steering device having a planar waveguide region between a tapered incoupler and a tapered outcoupler that respectively define opposing incoupler and outcoupler facets of the BS device. Each region has a substrate, a subcladding layer over the substrate, a core layer over the subcladding, and a top cladding layer over the core. Within the incoupler, at least one of the subcladding and the top cladding has a material having a refractive index that varies with an applied field (e.g., an electric field) applied at the incoupler. The optical system also has a field-applying device that applies the applied field at the incoupler, an output detector that generates a feedback signal based on detected outgoing light output from the outcoupler, and a controller that controls the field-applying device based on the feedback signal to alter the light output from the outcoupler.

Abstract: An optical fiber connector assembly comprises at least one connector having a latching arm for coupling to an adapter, and a remote release tab having a protrusion configured to cooperate with the adapter to depress said latching arm when the remote release tab is pulled relative to the adapter. The optical fiber connector assembly may further be configured to have a deformable region at one end of the pull tab operatively connector to the latch arm assembly for releasing the connector from the adapter.

Abstract: A light shield may be formed in photonic integrated circuit between integrated optical devices of the photonic integrated circuit. The light shield may be built by using materials already present in the photonic integrated circuit, for example the light shield may include metal walls and doped semiconductor regions. Light-emitting or light-sensitive integrated optical devices or modules of a photonic integrated circuit may be constructed with light shields integrally built in.

Abstract: An encapsulated package is provided that includes a pair integrated circuit (IC) die. A radio frequency (RF) circuit on one of the IC die is operable to transmit an RF signal having a selected frequency. An RF circuit on the other IC die is operable to receive the RF signal Encapsulation material encapsulates the IC die. A photonic waveguide couples between the RF transmitter and RF receiver to form galvanic path isolation between the two IC die. The photonic waveguide is formed by a photonic structure within the encapsulation material.

Abstract: Provided is a cladded single crystal sapphire optical fiber. In one embodiment, the innovation provides a method for forming a cladding in a single crystal sapphire optical fiber by reactor irradiation. The reactor irradiation creates ions external to the fiber that enter the fiber, displace atoms in the fiber, and are implanted in the fiber, thus modifying the index of refraction of the fiber near the surface of the fiber and creating a cladding in the sapphire fiber.

Abstract: A phase controller for controlling the phase of a light signal in a surface waveguide and a method for its fabrication are disclosed. The phase controller controls the phase of the light signal by inducing stress in the waveguide structure, thereby controlling the refractive indices of at least some of its constituent layers. The phase controller includes a phase-control element formed on topographic features of the top cladding of the waveguide, where these features (1) provide a shape to the phase-control element that matches the shape of the mode field of the light signal and (2) give rise to stress-concentration points that focus and direct induced stress into specific regions of the waveguide structure, thereby providing highly efficient phase control. As a result, the phase controller can operate at a lower voltage, lower power, and/or over a shorter interaction length than integrated-optic phase controllers of the prior art.

Abstract: An inspection system/method in which first optics direct continuous wave (CW) light at 181-185 nm to an inspected article, and second optics redirect image information affected by the article to detectors. A laser assembly generates the CW light by generating fourth harmonic light from first fundamental CW light having a first wavelength between 1 and 1.1 ?m, generating fifth harmonic light by mixing the fourth harmonic light with the first fundamental CW light, and mixing the fifth harmonic light with second light having a second wavelength between 1.26 and 1.82 ?m. An external cavity mixes the first light and the fourth harmonic light using a first nonlinear crystal. The CW light is generated using a second cavity that passes circulated second fundamental or signal CW light through a second nonlinear crystal, and directing the fifth harmonic light through the second nonlinear crystal.

Abstract: Assemblies, optical connectors, and methods for forming fiber arrays using laser bonded optical fibers are disclosed. In one embodiment, a method of forming a fiber array includes placing an optical fiber on a surface of a substrate, directing a laser beam into the optical fiber disposed on the surface of the substrate, melting, using the laser beam, a material of the substrate to create a first laser bond zone between the optical fiber and the surface of the substrate, applying an adhesive to the optical fiber and the substrate to create an adhesive bond zone between the optical fiber and the surface of the substrate, and cutting the optical fiber and the substrate to create a first section of the fiber array and a second section of the fiber array.

Abstract: An optical fiber connector according to the present disclosure includes a hollow housing, a ferrule holder, a spring, a back post and a sealing ring. The hollow housing has four side walls, wherein two of the four side walls are respectively provided with an opening. An annular bevel is formed in the interior of the housing. The ferrule holder is disposed within the housing. The spring is disposed within the housing to push the ferrule holder. The back post is partially disposed in the housing for abutting on the spring. Two protrusions are formed on the back post and respectively fall in the two openings on the housing. The sealing ring is put on the back post, wherein the back post is configured to push the sealing ring toward the annular bevel inside the housing such that the sealing ring abuts on the annular bevel.

Abstract: Systems and methods for shifting a position of one or more optical elements are disclosed. In an embodiment, a system may include a housing having a chamber formed therein, at least one non-linear crystal disposed in the chamber, the non-linear crystal configured to receive at least one incident signal and to convert a wavelength of at least a portion of the incident signal, and at least one shape memory alloy element disposed such that thermal or electrical energy applied to the shape memory alloy causes movement of the non-linear crystal.

Abstract: In-line uni-directional optical tap detector devices provide optical power monitoring in a small, inexpensive form factor. A pair of optical fibers with angled end surfaces are fusion-spliced or butt-coupled together, with a thin-film coating or coating stack positioned in between the two fiber end surfaces. The thin-film coating or coating stack acts as an optical tap, reflecting a small portion of the optical signal towards a photo-detector affixed to the exterior of the cladding of the fibers, positioned and angled such that the photo-detector measures the optical power of signals propagating in one direction down the fibers, while ignoring signals propagating in the opposite, or reverse direction. Alternately, a V-groove block or fiber holder is used to position and secure the fibers, without requiring fusion splicing, where the reflection of a portion of the optical signal to the photo-detector may be due to Fresnel reflection at the fiber end surfaces.

Abstract: A flexible optical ribbon and associated systems and methods of manufacturing are provided. The ribbon includes a plurality of optical transmission elements and an inner layer comprising a cross-linked polymer material and an outer surface. The outer surface of the inner layer includes first areas having first concentrations of uncrosslinked polymer material and second areas having second concentrations of uncrosslinked polymer material. The first concentrations are greater than the second concentrations. The ribbon includes an outer polymer layer having an inner surface interfacing with the outer surface of the inner layer. The outer polymer layer has a higher level of bonding to the inner layer at the first areas than at the second areas due to the ability of the outer polymer material to bond or crosslink with the larger numbers of uncrosslinked polymer material in the first areas.

Abstract: A light source providing multi-longitudinal resonant waves, particularly by utilizing an optical parametric oscillator (OPO) to produce a broadband emission spectrum. By configuring the system to pump the OPO far above the oscillation threshold, tunable light of macroscopic power with a short coherence length is provided. The coherence may be further shortened by additional longitudinal mode scrambling.

Abstract: Disclosed is a nonlinear optical (NLO) material for use in deep-UV applications, and methods of fabrication thereof. The NLO is fabricated from a plurality of components according to the formula AqByCz and a crystallographic non-centrosymmetric (NCS) structure. The NLO material may be fabricated as a polycrystalline or a single crystal material. In an embodiment, the material may be according to a formula Ba3ZnB5PO14.

Abstract: A method of producing a broadband and/or multi-mode emission light source utilizing an Optical Parametric Oscillator (OPO) includes providing a pump source configured to produce a continuous wave pump beam, providing an OPO with an optical cavity containing a nonlinear crystal configured to receive the continuous wave pump beam and produce a first output light beam and a second output light beam. The OPO has an OPO-oscillation threshold level and produces longitudinal mode-scrambling on a resonant OPO-wave. The first output light resonates in the optical cavity in a multi-longitudinal resonant mode and produces a pump beam having a power at least three times the OPO-oscillation threshold.

Abstract: A device for the generation of supercontinuum in infrared fiber with a compact light source comprising a microchip laser is launched directly into an infrared fiber without a nonlinear element. Light from the laser is beyond the two-photon absorption of the infrared fiber. The broadband output has a bandwidth greater than the input laser bandwidth by at least 100% and an emission wavelength range from 2 to 14 micrometers.

Abstract: A grommet adapted for insertion into a cable hanger includes a generally C-shaped main body formed of a polymeric material and having a longitudinal axis. Such a grommet can be securely held by a cable hanger.

Abstract: A transmitter optical module that provides an LD, a first lens with a focal point aligned with an optical output point of the LD, a second lens that generates an optical output of the first lens as a concentrated optical signal, and a third lens that provides an optical output of the second lens in an optical fiber. The second lens is set at a position offset toward the third lens from a position at which the second lens outputs a collimated optical signal. The third lens concentrates an optical output thereof within the optical fiber.

Abstract: A method comprises applying a frit material having a first melting temperature to an end of each fiber of a plurality of fibers in a fiber bundle having a second melting temperature to coat a tip of each fiber with the frit material and at least a portion of a side of each fiber near an end of the fiber bundle; inserting the fiber bundle into a housing such that the tip of each fiber in the fiber bundle extends past an edge of an end portion of the housing and the frit material forms a seal between the fiber bundle and an inner surface of the end portion of the housing; and heating the frit material to bind the frit material to the plurality of fibers without melting the plurality of fibers in the fiber bundle and to create a seal between the plurality of fibers.

Abstract: The present disclosure provides a multi-channel parallel optical receiving device, including a carrier, a light receiving chip, a plurality of optoelectronic diodes disposed on a top surface of an end of the carrier, an optical fiber connector disposed in another end of the carrier, and an arrayed waveguide grating disposed on the top surface of the carrier. The plurality of optoelectronic diodes is electrically connected to the light receiving chip, and an input end of the arrayed waveguide grating is connected to the optical fiber connector for receiving an optical signal from the optical fiber. The optical signals are divided into multi-channel optical signals in parallel. The top surface of an output end of the arrayed waveguide grating is at a predetermined angle, causing the multi-channel optical signals to be reflected by the top surface and to photosensitive surfaces of the optoelectronic diodes arranged in parallel.