Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 7426348 | Calibrating an optical transceiver via adaptive testing An optical transceiver connectable to a test apparatus. The optical transceiver includes a least one test apparatus interface configured to receive from the test apparatus an input causing at least a first transceiver operating parameter to have a level substantiall... | 09/16/2008 |
| 7425726 | Electroabsorption modulators and methods of making the same Electro-absorption modulators and methods of making the same are described. In one aspect, an electroabsorption modulator includes first and second electrodes, first and second cladding regions, an active region, and a tunnel junction structure. The first and second... | 09/16/2008 |
| 7424041 | Wide tuneable laser sources A method of manufacturing a tuneable laser assembly including a substrate having formed thereon a plurality of tuneable lasers including Multi Quantum Well (MQW) active sections as well as distributed Bragg reflector (DBR) tuning sections. The lasers have respective... | 09/09/2008 |
| 7422929 | Wafer-level packaging of optoelectronic devices In an embodiment, the invention provides a method for forming a wafer-level package. A bonding pad is formed on a first wafer. After forming the bonding pad, an optoelectronic device is located on the first wafer. A gasket is formed on a second wafer. After a gasket... | 09/09/2008 |
| 7415055 | Reliability-enhancing layers for vertical cavity surface emitting lasers Vertical cavity surface emitting lasers (VCSELs) and methods of making the same are described. The VCSELs include reliability-enhancing layers that perform specific functions at one or more critical locations within a VCSEL structure to reduce or prevent defect form... | 08/19/2008 |
| 7413917 | Integrated optics and electronics An optoelectronic device includes a submount and a lid. The submount includes a substrate and a lens and a laser above the substrate. The lid defines a cavity having a surface coated with a reflective material to form a 45 degree mirror. The mirror reflects a light ... | 08/19/2008 |
| 7400831 | Method of detecting the presence of cross-talk and apparatus therefor A control loop detects the presence of cross-talk between first, second and third adjacent amplitude modulated wavelength division modulated channels of an optical communications system. A receiver including a demultiplexer, such as an Arrayed Waveguide Grating (AWG... | 07/15/2008 |
| 7400662 | Calibration of laser systems A method for determining a condition of the laser system includes determining a change in a laser current from an initial value. A method for measuring a laser current includes determining a difference between the values of a power supply current, which is the value... | 07/15/2008 |
| 7400164 | Integrated circuit and method of improving signal integrity An Integrated Circuits (ICs) comprising a first output stage circuit and a second output stage circuit that share common input terminals and an output terminal of the first and second output stage circuits being selectably coupled between the input terminals and the... | 07/15/2008 |
| 7380994 | Integrated packaging system for optical communications devices that provides automatic alignment with optical fibers An integrated packaging system that comprises an integral mechanical support, a printed circuit board and the optical communications device. The mechanical support includes a first support element and a second support element. The first support element extends at a ... | 06/03/2008 |
| 7373035 | Heat transfer structures A switching element includes a bubble chamber, a heater and a heat conductor. The bubble chamber holds fluid. The bubble chamber includes a trench within a planar light circuit and includes a trench within an integrated circuit attached to the planar light circuit. ... | 05/13/2008 |
| 7372886 | High thermal conductivity vertical cavity surface emitting laser (VCSEL) A light generating device such as a VCSEL includes a light generation layer, a top reflector, a bottom reflector, and a high thermal conductivity (HTC) layer between the light generation layer and the bottom reflector. The light generation layer is adapted to genera... | 05/13/2008 |
| 7368062 | Method and apparatus for a low parasitic capacitance butt-joined passive waveguide connected to an active structure Undoped layers are introduced in the passive waveguide section of a butt-joined passive waveguide connected to an active structure. This reduces the parasitic capacitance of the structure. ... | 05/06/2008 |
| 7359635 | Optically-controlled optical network and switching node therefor The optically-switched optical network comprises information signal channels allocated for optically transmitting one or more information signals; routing signal channels allocated for optically transmitting routing signals in parallel with the information signals; ... | 04/15/2008 |
| 7359595 | Adaptive transmitter arrangement for optical fiber communications and related method An arrangement for optical fibre communications, for used, e.g., in millimetre (MM) fibre transmission systems includes: a source (1) of optical radiation defining an offset launch path of optical radiation (R) into an optic... | 04/15/2008 |
| 7359523 | Fluidic acoustic transducer Sound signals are detected. Light signals are generated that pass through a membrane of a bubble within a trench. The sound signals cause deformations within the membrane of the bubble. The light signals are detected after the light signals have passed through the m... | 04/15/2008 |
| 7358523 | Method and structure for deep well structures for long wavelength active regions Subwells are added to quantum wells of light emitting semiconductor structures to shift their emission wavelengths to longer wavelengths. Typical applications of the invention are to InGaAs, InGaAsSb, InP and GaN material systems, for example. ... | 04/15/2008 |
| 7347630 | Fiber optic transceiver having a floating transmitter port The invention provides a “floating” port assembly of a receptacle of a transceiver. The configuration allows the transmitter port assembly to float conically (e.g., angularly from side to side and up and down) relative to the axial direction of the receptacle sl... | 03/25/2008 |
| 7349454 | Method of monitoring and controlling a laser diode A method of controlling a laser diode measures an average light output power of the laser diode and compares the average light output power to a desired average light output power within a target range. If the average light output power is not within the target rang... | 03/25/2008 |
| 7340124 | Optical switch using rare earth doped glass The present invention provides an optical switch including a loss element having a signal loss, and a rare earth doped gain element optically connected in series with the loss element. The rare earth doped gain element is operable to produce a signal gain. The signa... | 03/04/2008 |
| 7331722 | Optical module for housing an optical component An optical module for housing an optical component to which optical fibers are to be connected, the optical module comprises a casing; at least two round fiber guides which are arranged within the casing, spaced at a distant from each other and around which the opti... | 02/19/2008 |
| 7331720 | Transceiver module for optical communications and method for transmitting and receiving data A transceiver module for optical communications is provided in which the leadframe assembly includes at least first and second die attach regions to which the laser diode driver IC and the laser diode IC are secured, respectively. A slot formed in the leadframe betw... | 02/19/2008 |
| 7317934 | Configurable communications modules and methods of making the same Configurable communications modules and methods of making the same are described. In one aspect, a communications module includes a data channel and a termination impedance controller. The data channel is operable to translate data signals in at least one direction ... | 01/08/2008 |
| 7315558 | Disable/enable control for laser driver eye safety 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 m... | 01/01/2008 |
