Abstract: A light integrator is mounted in a housing or cover that allows aligning the light integrator relative to a color wheel or other sequential color element. In some embodiments, a plate is attached to one end of a light rod and supports the light rod in the cover in a cantilever fashion or in combination with other support. The light rod is aligned to a light source, such as a lamp, and then the color wheel is aligned to the output of the light rod without altering the relationship between the light rod and the lamp.

Abstract: The invention concerns a device for generating, by interaction(s) with three or four waves from one or several incident optical radiation(s), one or several emergent radiation(s) tuneable at least in frequency. The invention is characterized in that it consists essentially of a crystal with non-linear optical property whereof the surface defines a cylindrical volume with complete revolution, or truncated on at least two opposite faces symmetrical relative to its axis of revolution, or partial on one of two said faces. Said device is particularly designed for applications in spectroscopy, remote sensing, long-distance transmission, remote guiding. The invention also concerns a method using said device.

Abstract: A flat-top arrayed waveguide grating with a Hyper-Gaussian distribution function and a modified sinc design exhibits a very low chromatic dispersion, low loss and requires a relatively small number of waveguides. Controlled loss is introduced into certain waveguides of the array by creating gaps (unguided regions) between the waveguides to produce a desired predetermined amplitude distribution. The gaps are preferably arranged in the middle of the array.

Abstract: A fiber tail assembly (FTA) with a micro-lens formed in the fiber tip is used to couple the laser light out of the package and along the fiber. The FTA is soldered at two points where metallized bands are deposited on the fiber pigtail, one at a fiber mount near the diode where it can be soldered into alignment with the laser diode, and two at the snout which forms a feed through the housing and seal for the package. Typically, the FTA is metallized along its entire length within the package. In this invention the two-metallized bands are separated by a region that is unmetallized.

Abstract: A fiber-optic module having a housing/shielding unit and a module chassis frame having optical, electrical and electro-optical components. The housing/shielding unit functions both as a protective outer housing and an electromagnetic shield. The housing/shielding unit includes forward fingers for a flush mounting in one embodiment and backward fingers for an extended mounting in another embodiment. The fingers can contact a bezel, faceplate or wall of host system to ground the housing/shielding unit to a chassis ground. The module chassis frame may be formed of a conductive material and grounded as well through a host system faceplate or otherwise to the chassis ground. A transmit ground for transmitter components and a receive ground for receiver components are isolated from the chassis ground.

Abstract: A plurality of die cut labels formed on a label substrate attached on the surface of a carrier for the die cut label substrate. A protective cover, preferably but not necessarily formed of transparent material, is adhesively secured over the die cut label substrate by way of a dry peel adhesive deposited on the surface of the die cut label substrate. The dry peel adhesive is such that when the protective cover is removed from the die cut label substrate, no tacky adhesive residue remains on the protective cover or the label substrate.

Abstract: The present invention relates to optical devices and, more particularly, to optical waveguide devices in which characteristics of a light signal are modulated or changed in accordance with an applied electric field. Conventionally, in such devices, such as, for example, a Mach-Zehnder modulator, DC drift problems, as are well known within the art, must be surmounted if the optical device is to meet minimum performance criteria. Suitably the present invention provides a layer of an oxide of silicon, preferably substantially, free of metallic impurities, where the ratio of oxygen to silicon is greater than 2 and is preferably greater than or equal to 2.2.

Abstract: An optical signal transceiver subassembly is mounted on a lead frame for further attachment to an electronic printed circuit board. The optical subassembly is comprised of a solid-state laser, a pair of photo-detectors, an over-mold of transparent material having shapes forming the exposed surface thereof, the surface and a selective silvering of a portion thereof defining a beam-splitter mirror and an interior reflective focusing surface, preferably in the shape of a partial cylindrical surface. The beam-splitter mirror is lightly silvered and the cylindrical surface is silvered to enhance the reflection of the laser beam. The optical subassembly is further enclosed with a housing incorporating a pair of lenses and alignment pins. The lenses focus the data stream of optical light signals onto the end of the outgoing optical fiber and the data stream of optical light signals from the incoming optical fiber onto and through the beam-splitter and onto a first photo-detector.

Abstract: The inventive coupling device enables a high interconnection density of single mode optical fiber in active and passive devises used in a fiber optic telecommunication system. The coupling device comprise a micro-lens formed by terminating a single mode optical fibers with an optimized gradient index fiber, thus avoiding a significant increase in fiber diameter. The gradient index is optimized to provide a long working distance to the minimum spot size so that efficient coupling can be achieved in a free space interconnection between either multiple single mode fibers or a single mode fiber to a transmitting or receiving device.

Abstract: A fiber optic module for transferring data as pulses of light has an optical element with a first light transducer having a straddle mount lead and a second light transducer having a formed or bent signal lead. A first fiber optic receptacle optically couples to the first light transducer and a second fiber optic receptacle optically couples to a second light. A printed circuit board subassembly includes first and second printed circuit boards with an interconnection therebetween to couple to an electrical connector on the first. The first printed circuit board and second printed circuit boards are aligned so that the straddle mount leads couple to contacts on the first and the formed signal lead couple to contacts on the second. One or more electrical components in the fiber optic module process data for communication using light or photons over one or more optical fibers. An outer housing encloses the optical element subassembly and the printed circuit board subassembly.

Abstract: A heat sink is for an element to be cooled has a thermally conductive base and a plurality of thermally conductive pins or fins extending substantially perpendicular from the base, said pins or fins being arranged in a predetermined pattern. The pins at least partially frame thermally conductive projections extending substantially perpendicular from said base which forming a discernable logo having an upper surface and sides for providing plural cooling surfaces. In this instance the 3-D logo performs cooling of the components within a package.

Abstract: The invention provides a variable optical attenuator or array with low PDL by using an embedded polymer channel waveguide with a plurality of resistive heaters fabricated on the top cladding of the polymer waveguide. The resistive heaters create a strong thermal gradient in the polymer layer stack which is associated with a strong refractive index gradient with the lowest refractive index under the heater. This refractive index gradient causes the optical mode in the channel to shift towards the buffer layer. Attenuation is induced by transition losses between heated and unheated regions in the polymer waveguide when an optical signal passes through these regions of the polymer waveguide.

Abstract: A Lyot depolarizer for depolarizing a laser with multiple longitudinal modes comprises two segments of PM fiber optimized for length as a function of the longitudinal mode spacing of the laser source, and not as taught in the prior art as a function of the laser coherence length. The present invention has found secondary coherence peaks in the coherence function of a multiple longitudinal mode source, which can significantly worsen the DoP if the PM fiber lengths are significantly extended beyond optimum, contrary to the teaching in the prior art. The present invention makes use of the periodic structure of the source spectrum by converting half the longitudinal modes to an orthogonal polarization state. As a result a significantly shorter fiber depolarizer is needed than for a single longitudinal mode source. Greater temperature stability is achieved by properly adjusting the lengths of both segments of PM fiber.

Abstract: An optical transmitter includes an optical bench in one embodiment. A window frame is mounted to a mounting block having a groove to form the optical bench. Optic and electro-optic components of the optical transmitter are mounted to the optical bench. The window frame includes a plurality of openings for mounting one or more ball lenses, an optical isolator, and a semiconductor laser. The semiconductor laser chip is used to generate light signals for optical communication over an optical fiber. The one or more ball lenses may be mounted into ball lens openings of the window frame and extend into the groove of the mounting block. One of the ball lenses maybe used to focus light signals between an optical fiber and the optical transmitter. Another one of the ball lenses may be used to collimate the light output from the semiconductor laser. In another embodiment, an optical receiver includes the optical bench. In yet another embodiment, an optical transceiver includes the optical bench.

Abstract: An electrode structure wherein galvanic corrosion at adhesion layers formed between electrodes and electronic or electro-optic substrates is eliminated. The electrode structure includes an electro-optic crystalline substrate, an amorphous layer disposed on the crystalline substrate, the amorphous layer having a composition substantially similar to a composition of the crystalline substrate, and a gold layer disposed directly on the amorphous layer. The amorphous layer is created using ion sputtering etching techniques that clean and activate the surface of the crystalline substrate such that the gold layer is able to adhere to it.

Abstract: A method of removing an optical device contained within a device package from a circuit board, wherein the device package is secured to the circuit board using an adhesive pad. The method includes peeling a portion of the adhesive pad away from the circuit board, inserting an optical removal tool between the optical device and the circuit board, wherein the optical removal tool has a pair of fork portions and a cavity positioned between the fork portions, and the fork portions straddle one or more leads on the optical device during the inserting step, and prying the remainder of the adhesive pad away from the circuit board using the optical device removal tool.

Abstract: A mixed frequency-based method and arrangement for characterizing an electro-optic modulator is configured to vary the tuning of a laser beam, to be modulated by the optical modulator, simultaneously with and in the same manner as the variation in frequency of the modulation signal. The effect of this dual modulation approach is a modulated laser beam, in which the frequency difference between the carrier component of the laser beam and sideband energy produced by the modulation signal is controlled so that it falls within the sensitivity range of a relatively low cost optical detector.

Abstract: A filter device provides for the modification of the group delay of an optical signal without attenuation of adjacent optical signals in a WDM optical communication systems. The filters devices may be combined and used in various methods to modify the GD and dispersion. The filters are configured and designed to provide various controllable and different amounts of GD as well as dispersion at different over a range of wavelengths.

Abstract: The invention relates to an optical coupling device that provides passive compensation for a shift in center wavelength due to a change in ambient temperature. A conventional solution is to mount one of the elements to be coupled on a pedestal or cantilevered arm, which has a coefficient of thermal expansion (CTE) different from a frame fixed relative to the other of the elements to be coupled. Unfortunately, these devices do not provide consistent results over long periods of time, due to uncontrolled movement of the outer free end of the cantilevered arm or pedestal. The present invention provides an expansion arm fixed on one end to a frame, a holder on the other end of the expansion arm, and a pair of flexible arms connecting the holder to the frame. This arrangement enables the expansion arm to freely expand in a first direction, while greatly restricting movement in any other direction.

Abstract: A fiber optic module having a push button release to unlatch and withdrawal (i.e. unplug) it from a cage or a module receptacle. A kicker-actuator includes a button, an arm or push rod, and a hook in one embodiment to couple to an actuator. An integrated actuator is also provided with the push button subassembly. Embodiments of a withdrawal tab are also provided to pull the fiber optic module away from the cage or module receptacle. A nose grip is further provided pull the fiber optic module away from the cage or module receptacle. A belly-to-belly mounting configuration is introduced for the push button release fiber optic modules.