| Patent Number |
Title Of Patent |
Date Issued |
| 7386639 |
Switch for coupling one bus to another bus |
June 10, 2008 |
| A communication module includes a switch circuit operable to connect an internal bus to an external bus for, e.g., diagnostics, verification, and fault analysis. The internal bus allows data communication between electronic components internal to the communication module, and the ext |
| 7359644 |
Optoelectronic module with integrated loop-back capability |
April 15, 2008 |
| An optoelectronic module includes an optical radiation source having associated an output transmission path for an output optical radiation generated by the source as well as an optical radiation detector having associated an input transmission path for an input optical radiation to |
| 7333685 |
Variable optical attenuator systems |
February 19, 2008 |
| Low loss, reliable variable optical attenuators and 1.times.2 switches and polarization insensitive low loss, reliable variable optical attenuators and 1.times.2 optical switches are described. In one embodiment, a system of the present invention includes a polarization separating sub-sy |
| 7322751 |
Apparatus and method for orienting an optical waveguide in relation to an optical unit of an opt |
January 29, 2008 |
| The invention relates to an apparatus and method for orienting an optical waveguide in relation to an optical unit arranged in or on an optical module. The optical module has a reference geometry which defines a first axis of symmetry. An offset between the optical axis of the optical un |
| 7313326 |
Method to inject pilot tone into microcontroller-supervised DWDM transmitters |
December 25, 2007 |
| The power of a digital signal such as an optical data stream is set via digital-to-analog converter having a reference input for connection to a DC reference signal. The pilot tone is injected into the reference input of the digital-to-analog converter. In the place of a dual amplitude |
| 7308170 |
Optical fiber coupler having a relaxed alignment tolerance |
December 11, 2007 |
| An optical coupler converts a light distribution from a light source into a small angle distribution that extends over a volume larger than the variations in the alignment of an optical fiber. In one embodiment, a diffractive or hybrid diffractive/refractive bifocal lens forms first and |
| 7296085 |
Multiple protocol handshaking between systems |
November 13, 2007 |
| Handshaking is performed between a first host system and a second host system. First handshaking is performed between a host module within the first host system and a first transceiver within the first host system. The first handshaking includes passing from the first transceiver to the |
| 7290073 |
Master slave serial bus apparatus |
October 30, 2007 |
| The present invention provides a master slave arrangement for providing communication between a master device and a slave device, the arrangement comprising: a first serial bus connecting said master device with an intermediate device and a second serial bus connecting said intermediate |
| 7289545 |
Semiconductor laser with integrated heating element and method of manufacturing same |
October 30, 2007 |
| A semiconductor laser structure has a laser active region and side trenches extending along the laser active region. At least one heatable stripe, in at least one of the side trenches, is connected to an electric power source. The amount of energy the source supplies to the stripe co |
| 7286771 |
Multi-channel optical transmitter incorporating a tunable optical signal source and method for t |
October 23, 2007 |
| The multi-channel optical transmitter is composed of a tunable optical signal source, an optical multiplexer and an intensity reducer. The tunable optical signal source includes a tunable laser, and additionally includes an optical signal output through which it outputs an optical si |
| 7286588 |
Semiconductor laser with grating structure for stabilizing the wavelength of optical radiation |
October 23, 2007 |
| An optoelectronic device having a semiconductor laser diode and a grating structure for stabilizing the optical wavelength of optical radiation generated by the laser diode. |
| 7286581 |
Self-monitoring light emitting apparatus |
October 23, 2007 |
| A self-monitoring light source is provided. The self-monitoring light source includes a light source that generates light and a light monitor that receives a portion of the generated light. The light source and the light monitor are manufactured on the same semiconductor die. |
| 7286579 |
Apparatus and method for adjusting external-cavity lasers |
October 23, 2007 |
| Adjustment of a tunable external-cavity laser is simplified by incorporating a mount that includes a base, a main body, a reflecting surface, a diffracting surface and a hinge coupling the main body to the base. The laser additionally includes a light source, a converging lens locate |
| 7284915 |
Interface apparatus, connector apparatus and method of reducing electromagnetic interference |
October 23, 2007 |
| A subassembly apparatus includes a substantially shieldable interior chamber for housing at least one source of electromagnetic radiation, a connector plane external to the interior chamber for locating an end surface of a connector, and a launch window for locating an end surface of |
| 7280764 |
Optical signal multiplexer/demultiplexer employing pseudorandom mode modulation |
October 9, 2007 |
| An optical signal multiplexer/demultiplexer using an orthogonal pseudorandom (PRN) coding scheme for optical mode modulation to produce a plurality of independent optical signals that may be combined into one multiplex signal for transmission over an optical fiber to the receiving en |
| 7277640 |
Optical add/drop multiplexing systems |
October 2, 2007 |
| The present invention overcomes problems associated with switch isolation, noise and crosstalk suppression, insertion loss, spurious reflections, wavelength tolerance, and compactness that are present in varying degrees in other add/drop systems. The present invention includes devices or |
| 7274845 |
Low-cost method and apparatus for establishing fiber optic connections |
September 25, 2007 |
| A low-cost molded sleeve for a fiber optic cable connector receptacle is disclosed. The inner surface of the sleeve, into which a fiber optic connector can be inserted, is defined by three surfaces. A first planar surface and a second planar surface at right angles to each other form a |
| 7274840 |
Clean and test for fluid within a reflection optical switch system |
September 25, 2007 |
| Fluid within a reflection optical switch system is purified. Gettering structures are placed within a chamber within the reflection optical switch system. The gettering structures includes heating components which when actuated attract impurities. The heating components within the ge |
| 7272324 |
Equalization of optical signals |
September 18, 2007 |
| Methods for performing time-domain equalization of an information signal represented by an optical signal are provided. A representative method includes: receiving the optical signal; optically splitting the optical signal into beams; optically delaying at least one of the beams; det |
| 7269196 |
Method for increasing maximum modulation speed of a light emitting device, and light emitting de |
September 11, 2007 |
| The method comprises forming barrier layers of Al.sub.xGa.sub.1-xAs, forming a quantum well layer of InGaAs between the barrier layers, and forming an interfacial layer between the quantum well layer and each of the barrier layers. |
| 7266280 |
Cable storage device providing continuous adjustability with controlled bend radius |
September 4, 2007 |
| A device for storing and deploying cable, including but not limited to optical fiber cable. The device includes a substantially planar bottom support surface having juxtaposed thumb segments and an intervening finger segment. An outer wall is affixed to the bottom surface about its p |
| 7265439 |
Low cost, high speed, high efficiency infrared transceiver |
September 4, 2007 |
| An inventive transceiver includes a transmitter for outputting plural beams of electromagnetic energy. In the illustrative embodiment, the transmitter is a vertical cavity surface emitting laser. Plural beams output by the transmitter are directed to the detector by an array of diffr |
| 7263248 |
Optical via to pass signals through a printed circuit board |
August 28, 2007 |
| An optical via within a printed circuit board (PCB) to route optical signals from one level to another through the PCB. The optical signals entering the optical via from an optoelectronic device, or other source, may be routed by an optical waveguide to enter other optical vias to a |
| 7261473 |
Optical sub assembly |
August 28, 2007 |
| An optical sub assembly for receiving an optical fiber transmission line for coupling to an optical device, to a receptacle for use in such a sub assembly and to a method of manufacture of such a sub assembly. The optical sub assembly preferably provides electrical isolation between a |
| 7255495 |
Axis translation installation mechanism for optoelectronic modules |
August 14, 2007 |
| An optoelectronic module is seated onto a substrate connector by guiding the module along an initial path portion that is misaligned with respect to the mating direction defined by the substrate connector and further includes providing a positive pressure drive along an end path portion |
| 7246954 |
Opto-electronic housing and optical assembly |
July 24, 2007 |
| An opto-electronic housing and an opto-electronic assembly. The housing includes an enclosure defining a cavity. An opening through a wall of the enclosure is adapted to receive a substrate. A mount projects into the cavity opposite the opening. The mount is adapted to support an opt |
| 7239790 |
Method for controlling attenuation of an optical element |
July 3, 2007 |
| A method for controlling the attenuation of an optical element. A base material, such as a resin, is selected from which to fabricate the optical element. The base material has an intrinsic attenuation or intrinsic absorption spectrum. A predetermined concentration of a first type of |
| 7233740 |
Self-characterizing and self-programming optical transmitter |
June 19, 2007 |
| A transmitter uses an on-chip pattern generator to provide an input signal, and a built-in monitor to detect the power of the light emitted by the light source. The transmitter determines the correlation between the output power measured by an external power meter, and the output pow |
| 7233723 |
Optoelectronic assembly with coupling features for alignment |
June 19, 2007 |
| An optoelectronic assembly includes an optical lens element (OLE) coupled to a substrate. The substrate includes a transducer, a standing structure on the transducer, a transducer lens supported by the standing structure over the transducer, and alignment features. The OLE includes an OL |
| 7233709 |
Electro-absorption modulator |
June 19, 2007 |
| Embodiments of the invention provide an electro-absorption modulator including an optical waveguide and a microwave waveguide. The microwave waveguide is electromagnetically coupled to the optical waveguide. The optical waveguide includes a quantum well region and a substantially sin |
| 7231112 |
Solder seals within a switching system |
June 12, 2007 |
| A silicon chip is attached to a planar light circuit. A recessed moat is formed around an output perimeter of a surface of the silicon chip. When soldering the silicon chip to the planar light circuit, the recessed moat is filled with solder. |
| 7230228 |
Tunable temporal dispersion and compensated angular dispersion in optical switching systems |
June 12, 2007 |
| Methods for utilizing optical systems in order to introduce digitally tunable amounts of temporal dispersion into optical signals and methods and systems for providing angular dispersion compensated output from optical switching/routing systems. |
| 7229217 |
Fiber-optic connector for releasably coupling an optical fiber to an optoelectronic device and r |
June 12, 2007 |
| A module for coupling to a fiber-optic cable includes an optoelectronic assembly that includes a bracket and a metal receptacle. The metal receptacle includes an attachment member operable to releasably connect the receptacle to the bracket, an alignment end operable to receive an al |
| 7227246 |
Matching circuits on optoelectronic devices |
June 5, 2007 |
| An apparatus comprises a first substrate and a second substrate. The first substrate includes an optoelectronic device and a matching circuit. The second substrate includes a driver circuit. A frequency response of the optoelectronic device is changed by the matching circuits. The first |
| 7223619 |
VCSEL with integrated lens |
May 29, 2007 |
| A wafer-level device fabrication process forms standing structures around emitting areas of multiple VCSELs. The standing structures can be shaped to hold ball lenses or other optical elements for respective VCSELs or can include platforms on which optical elements are formed. Ball lense |
| 7221819 |
Operating an optical switch at a negative pressure differential |
May 22, 2007 |
| An optical switch having liquid or vapor bubbles at switching sites operates with a fluid pressure less than the vapor pressure of the liquid. This negative pressure differential reduces the energy required to maintain a bubble at a switching site. Local heating provides the energy t |
| 7218660 |
Single-mode vertical cavity surface emitting lasers and methods of making the same |
May 15, 2007 |
| In one aspect, a vertical cavity surface emitting laser (VCSEL) is operable to generate single-mode laser light at an operative wavelength. The VCSEL includes a light-emitting surface and a monolithic longitudinal stack structure. The longitudinal stack structure includes a first mir |
| 7218654 |
Eye diagram improving method for laser transmitter |
May 15, 2007 |
| A method for calibrating a laser transmitter includes (a) detecting an eye diagram of an output from the laser transmitter, (b) determining if the eye diagram is acceptable, (c) if the eye diagram is not acceptable, changing a value of a control signal in the laser transmitter, wherein |
| 7215837 |
Optical waveguide display systems and methods |
May 8, 2007 |
| Optical waveguide systems and methods are described. In one aspect, a display system includes a planar acoustic cavity having a fundamental resonant acoustic mode. The acoustic cavity includes an array of optical waveguides and an array of acoustic transducers. Each of the optical wa |
| 7215688 |
Disable/enable control for laser driver eye safety |
May 8, 2007 |
| A circuit for disabling an energy-generating component. The circuit comprises an input operable to receive a disable signal and a disable circuit operable to disable the component in response to the disable signal for a predetermined duration of time sufficient to maintain an average |
| 7213982 |
Optoelectronic module with high coupling efficiency |
May 8, 2007 |
| An optoelectronic module includes a laser, a ball lens, a substrate, a reflector, and a focusing lens. The laser generates a diverging light beam along an optical axis. The ball lens has a center. The substrate has a surface supporting the laser and an alignment structure. The alignment |
| 7209283 |
Compact optical amplifier with a flattened gain profile |
April 24, 2007 |
| A flattened gain amplifier has a waveguide with a core doped with at least one species of rare earth ion. The rare earth ion has a gain profile with a first gain in a first wavelength band and a second gain in a second wavelength band. The flattened gain amplifier also has a first gratin |
| 7206474 |
Heating of trenches in an optical bubble switch |
April 17, 2007 |
| An optical bubble switch having structures for heating trenches in response to applied electromagnetic energy. The structures for heating trenches according to the present teachings reduce the power dissipation in power lines in an MCC and facilitate drying of trench walls during bub |
| 7206140 |
Lens, lens array and optical receiver |
April 17, 2007 |
| In one embodiment, a lens has an object surface and an image surface, with the shape of the image surface being defined by an equation having a conic component and a cone component. The lens may be incorporated into an optical receiver having a photodetector that is positioned to receive |
| 7204712 |
Monolithic living hinge small form factor transceiver bail-delatch |
April 17, 2007 |
| A monolithic bail-delatch mechanism is provided for a module plugged into a cage. The bail-delatch mechanism is a single monolithic unit that includes a living hinge connecting a bail and a delatch clip. The living hinge, the bail, and the delatch clip may be made of a single injection |
| 7203219 |
Transmitter optical sub assembly, for instance for high speed optical transceivers |
April 10, 2007 |
| A transmitter optical sub assembly includes a laser source having associated therewith a laser driver and a package for housing the laser source (10) and the laser driver. The package includes respective separate compartments for the laser source and the laser driver, wherein a packa |
| 7202553 |
Wafer bonding using reactive foils for massively parallel micro-electromechanical systems packag |
April 10, 2007 |
| A method for forming device packages includes forming a perimeter with a reactive foil and a bonding material interposed between a first wafer and a second wafer, pressing the first and the second wafers against the reactive foil and the bonding material, initiating the reactive foil, |
| 7199666 |
Construction and use of preamps having discrete gain states |
April 3, 2007 |
| In one embodiment, the linear gain region of a preamp is widened by performing the following actions within the preamp: converting a received input current to a first voltage; in accordance with one of a plurality of discrete gain states, amplifying the first voltage to produce a second |
| 7196017 |
Method for etching smooth sidewalls in III-V based compounds for electro-optical devices |
March 27, 2007 |
| III-V based compounds are etched to produce smooth sidewalls for electro-optical applications using BCl.sub.3 together with chemistries of CH.sub.4 and H.sub.2 in RIE and/or ICP systems. HI or IBr or some combination of group VII gaseous species (Br, F, I) may be added in accordance |
| 7191823 |
Optoelectronic module and a thermal switch therefor |
March 20, 2007 |
| A laser located within a casing of an optoelectronic module is operated by heating the laser to an operating temperature at or above the maximum specified, operating temperature of the module casing using a heater device within the module, the laser having operating characteristics at |
