| Patent Number |
Title Of Patent |
Date Issued |
| 7583879 |
Coupled optical waveguide resonators with heaters for thermo-optic control of wavelength and com |
September 1, 2009 |
| An integrated optical device is disclosed comprising a substrate, optical waveguide, and compound optical resonator having a temperature sensor, at least two coupled optical resonators, and a heater localized to each optical resonator. An optical input signal is coupled to one of the |
| 7577325 |
Method of fabricating a polarization sorter |
August 18, 2009 |
| A method of fabricating a passive polarization sorter includes the steps of providing first and second waveguides. The first waveguide has an input and an output. The first waveguide supporting at least one guided TE polarized mode of mode ranking mode-i-TE and at least one guided TM |
| 7577320 |
Low loss lateral optical waveguide intersections |
August 18, 2009 |
| A geometrically shaped optical waveguide crossing or intersection with minimal transmission loss is described. A symmetrically tapered waveguide intersection is used to minimize loss in the intersecting region where at least two optical waveguides cross one another at 90.degree. or nearl |
| 7574146 |
Pattern-dependent error counts for use in correcting operational parameters in an optical receiv |
August 11, 2009 |
| An optical transmission network includes an optical transmitter photonic integrated circuit (TxPIC) chip, utilized in an optical transmitter and has a plurality of monolithic modulated sources integrated for multiple signal channels on the same semiconductor chip is provided with channel |
| 7570845 |
Deployment of electro-optic amplitude varying elements (AVEs) and electro-optic multi-functional |
August 4, 2009 |
| Electro-optic amplitude varying elements (AVEs) or electro-optic multi-function elements (MFEs) are integrated into signal channels of photonic integrated circuits (PICs) or at the output of such PICs to provide for various optical controlling and monitoring functions. In one case, s |
| 7570671 |
Method and apparatus for deploying forward error correction in optical transmission networks and |
August 4, 2009 |
| An apparatus and method for uniformly sharing across a plurality of channel signals FEC coding gain which may be achieved through FEC encoding of a higher baud rate electrical data signal or through multiplexed or combined electrical data signals from multiple data sources prior to t |
| 7565041 |
Symmetric optical circuit with integrated polarization rotator |
July 21, 2009 |
| The present invention is directed to an on-chip symmetric optical circuit having one or more integrally fabricated polarization rotators forming a monolithic, solid state polarization independent symmetric circuit. The symmetric optical circuit has at least one integrally fabricated rota |
| 7555220 |
Chromatic dispersion compensator (CDC) in a photonic integrated circuit (PIC) chip and method of |
June 30, 2009 |
| An optical equalizer/dispersion compensator (E/CDC) comprises an input/output for receiving a multiplexed channel signal comprising a plurality of channel signals of different wavelengths. An optical amplifier may be coupled to receive, as an input/output, the multiplexed channel sig |
| 7555178 |
Periodic optical filter |
June 30, 2009 |
| A periodic optical filter for interleaving a plurality of optical signals to provide a multiplexed signal for transmission over an optical fiber is disclosed. The periodic optical filter includes a first optical filter constructed to receive at least two optical signals through an input |
| 7551815 |
Method of monitoring and controlling the bit error rate (BER) in an optical communication networ |
June 23, 2009 |
| A method is disclosed for monitoring and controlling the bit error rate (BER) in an optical communication network where an optical receiver in the optical transmission network. The method includes the steps of decombining a combined channel signal received from the network and then m |
| 7546007 |
Broadband optical via |
June 9, 2009 |
| A broadband optical via provides a low loss interconnection between waveguides in two vertically adjacent planar waveguiding layers. Two waveguides, one in each planar layer, evanescently interact over an interaction length, and substantially all of the power on one waveguide is tran |
| 7546001 |
Monolithic photonic integrated circuit (PIC) with forward error correction (FEC) |
June 9, 2009 |
| Monolithic photonic integrated circuits (PICs) utilize forward error correction (FEC) joint encoder or plural encoders or a joint decoder or plural decoders. |
| 7539365 |
Deployment of electro-optic amplitude varying elements (AVEs) and electro-optic multi-functional |
May 26, 2009 |
| Electro-optic amplitude varying elements (AVEs) or electro-optic multi-function elements (MFEs) are integrated into signal channels of photonic integrated circuits (PICs) or at the output of such PICs to provide for various optical controlling and monitoring functions. In one case, s |
| 7529436 |
Optical combiner/decombiner with reduced insertion loss |
May 5, 2009 |
| A photonic integrated circuit that includes a plurality of active and passive components on a substrate where one of the components is an optical combiner/decombiner having at least one free space coupler region and a plurality of longitudinal ridge waveguides each extending in the c |
| 7526151 |
Highly symmetric optical structures |
April 28, 2009 |
| An intermediate structure used to form an integrated optics device comprising a substrate, a cladding on the substrate, at least one real waveguide on the cladding, and at least one dummy waveguide optically coupled with the real waveguide. The real waveguide forms a part of a predet |
| 7526150 |
Deployment of electro-optic amplitude varying elements (AVES) and electro-optic multi-functional |
April 28, 2009 |
| Electro-optic amplitude varying elements (AVEs) or electro-optic multi-function elements (MFEs) are integrated into signal channels of photonic integrated circuits (PICs) or at the output of such PICs to provide for various optical controlling and monitoring functions. In one case, s |
| 7519246 |
Photonic integrated circuit (PIC) chips |
April 14, 2009 |
| A photonic integrated circuit (PIC) chip comprising an array of modulated sources, each providing a modulated signal output at a channel wavelength different from the channel wavelength of other modulated sources and a wavelength selective combiner having an input optically coupled to |
| 7519240 |
Multi-section coupler to mitigate guide-guide asymmetry |
April 14, 2009 |
| A wavelength independent multi-section optical coupler having at least three optical couplers, and at least two differential phase cells. Each optical coupler has two waveguides forming a coupling region having a net coupling value. The coupling value for each coupling region of the at |
| 7512295 |
Transmitter photonic integrated circuits (TXPICS) with directly modulated lasers and wavelength |
March 31, 2009 |
| A photonic integrated circuit (PIC) chip comprising an array of modulated sources, each providing a modulated signal output at a channel wavelength different from the channel wavelength of other modulated sources and a wavelength selective combiner having an input optically coupled to |
| 7505640 |
Integrated optics polarization beam splitter using form birefringence |
March 17, 2009 |
| A method for separating the orthogonal polarization components of an incident optical signal into two spatially separated output ports is described. The method comprises a Mach-Zehnder interferometer where one of the two branches has a section of waveguide that exhibits form-birefrin |
| 7499610 |
Method of using a polarization sorter |
March 3, 2009 |
| A method of using a passive polarization sorter comprising the step of deploying a first waveguide and a second waveguide forming an adiabatic region along a portion of their length. Then, an input optical signal is introduced into the first waveguide wherein light having at least one |
| 7489838 |
Optical transmitter |
February 10, 2009 |
| An optical transmitter comprises an array of modulated sources having different operating wavelengths approximating a standardized wavelength grid and providing signal outputs of different wavelengths. Signal outputs of the modulated sources are optically coupled to inputs of the wav |
| 7483599 |
Method of calibrating a monolithic transmitter photonic integrated circuit (TXPIC) chip |
January 27, 2009 |
| A method of calibrating a monolithic transmitter photonic integrated circuit (TxPIC) chip is disclosed where the chip contains integrated arrays of laser sources and electro-optic modulators forming a plurality of different wavelength signal channels where each laser source on the ch |
| 7477807 |
Monolithic transmitter photonic integrated circuit (TxPIC) semiconductor chip |
January 13, 2009 |
| A photonic integrated circuit (PIC) chip comprising an array of modulated sources, each providing a modulated signal output at a channel wavelength different from the channel wavelength of other modulated sources and a wavelength selective combiner having an input optically coupled to |
| 7471857 |
Method of tuning optical components integrated in a monolithic photonic integrated circuit (PIC) |
December 30, 2008 |
| An optical transmitter comprises a monolithic transmitter photonic integrated circuit (TxPIC) chip that includes an array of modulated sources formed on the PIC chip and having different operating wavelengths approximating a standardized wavelength grid and providing signal outputs o |
| 7468237 |
Integrated optical circuits having drop-in locations for optical circuit elements |
December 23, 2008 |
| A plurality of mask images defines an optical circuit image in photoresist. Each of the mask images comprises parts of the optical circuit and the totality of all mask images together defines an optical circuit. The optical circuit is thus made up of plural optical elements some of w |
| 7466882 |
Monolithic transmitter/receiver photonic integrated circuit (Tx/RxPIC) transceiver chip |
December 16, 2008 |
| A single monolithic transceiver chip for handling optical to electrical to optical conversion of optical WDM signals in an optical transmission network which has an optical WDM signal input for reception of a WDM signal and an optical WDM signal output for transmission of a WDM signal |
| 7460742 |
Method and apparatus for providing an antireflection coating on the output facet of a photonic i |
December 2, 2008 |
| An on-chip photodiode is provided in a photonic integrated circuit (PIC) on a semiconductor chip to monitor or check for antireflection qualities of an AR coating applied to the front facet of the semiconductor chip. |
| 7457496 |
Receiver photonic integrated circuit (RxPIC) chip utilizing compact wavelength selective decombi |
November 25, 2008 |
| A monolithic receiver photonic integrated circuit (RxPIC) chip includes a plurality of optical signal channels together with other active elements integrated on a semiconductor chip, which chips further include a wavelength selective decombiner comprising a supergrating or an Echelle |
| 7446622 |
Transmission line with low dispersive properties and its application in equalization |
November 4, 2008 |
| A transmission line is provided with added shunt resistance, R.sub.SH, distributed along the length of the micro transmission line permitting the extension of constant characteristic impedance to the transmission line to lower signal frequencies. The loss in gain to the signal propag |
| 7444048 |
Tilted combiners/decombiners and photonic integrated circuit (PIC) employing the same |
October 28, 2008 |
| A monolithic optical transmitter photonic integrated circuit (TxPIC) comprises a plurality of integrated modulated sources which, when all operated at constant current, display a power output that varies as a function of array position similar to a quadratic-shaped curve and, further |
| 7437029 |
Method of manufacturing and apparatus for a transmitter photonic integrated circuit (TXPIC) chip |
October 14, 2008 |
| A monolithic photonic integrated circuit (PIC) chip where the active waveguide cores of the modulated sources of the PIC are multiple quantum wells (MQWs) and the passive waveguide cores of an optical combiner are a bulk layer or material. The cores of the waveguide cores may be a qu |
| 7394953 |
Configurable integrated optical combiners and decombiners |
July 1, 2008 |
| System, devices and methods are described that provide an integrated optical decombiner or optical combiner having both unamplified paths and amplified paths on which power monitoring and control may be located. A preferred multiplexing/demultiplexing optical path through the combine |
| 7373042 |
Polarization sorter |
May 13, 2008 |
| A polarization sorter having an input, an output and a slowly varying region. The input has at least one input waveguide. The input waveguide supports at least one guided TE polarized mode of mode ranking mode-i-TE, and at least one guided TM polarized mode of mode ranking mode-j-TM. The |
| 7359593 |
Integrated optical mode shape transformer and method of fabrication |
April 15, 2008 |
| An integrated optical mode transformer provides a low loss interconnection between an optical fiber and an integrated optic waveguide having a spot size different from that of the fiber. The mode transformer is comprised of two waveguide layers, an upper layer and a lower layer, with the |
| 7356221 |
Coupled optical waveguide resonators with heaters for thermo-optic control of wavelength and com |
April 8, 2008 |
| An integrated optical device is disclosed comprising a substrate, optical waveguide, and compound optical resonator having a temperature sensor, at least two coupled optical resonators, and a heater localized to each optical resonator. An optical input signal is coupled to one of the |
| 7356206 |
Integrated optics polarization beam splitter using form birefringence |
April 8, 2008 |
| A method for separating the orthogonal polarization components of an incident optical signal into two spatially separated output ports is described. The method comprises a Mach-Zehnder interferometer where one of the two branches has a section of waveguide that exhibits form-birefrin |
| 7340122 |
Monolithic transmitter photonic integrated circuit (TxPIC) with integrated optical components in |
March 4, 2008 |
| A photonic integrated circuit (PIC) chip comprising an array of modulated sources, each providing a modulated signal output at a channel wavelength different from the channel wavelength of other modulated sources and a wavelength selective combiner having an input optically coupled to |
| 7324719 |
Method tuning optical components integrated in a monolithic photonic integrated circuit (PIC) |
January 29, 2008 |
| A method of tuning optical components integrated on a monolithic semiconductor chip having a plurality of first optical components integrated on the chip with each fabricated to approximate an emission wavelength along a given wavelength grid and together forming a first optical comp |
| 7295783 |
Digital optical network architecture |
November 13, 2007 |
| A digital optical network (DON) is a new approach to low-cost, more compact optical transmitter modules and optical receiver modules for deployment in optical transport networks (OTNs). One important aspect of a digital optical network is the incorporation in these modules of transmi |
| 7286487 |
Optical transmission network with asynchronous mapping and demapping and digital wrapper frame f |
October 23, 2007 |
| An optical transmission network is inherently asynchronous due to the utilization of a variable overhead ratio (V-OHR). The network architecture makes extensive use of OEO regeneration, i.e., deals with any electronic reconditioning to correct for transmission impairments, such as, f |
| 7283694 |
Transmitter photonic integrated circuits (TxPIC) and optical transport networks employing TxPICs |
October 16, 2007 |
| A photonic integrated circuit (PIC) chip comprising an array of modulated sources, each providing a modulated signal output at a channel wavelength different from the channel wavelength of other modulated sources and a wavelength selective combiner having an input optically coupled to |
| 7282311 |
Method of forming an integrated optical circuit |
October 16, 2007 |
| A method is disclosed for forming an optical circuit on a substrate. The method includes the deployment of a plurality of mask images to define an optical circuit image in photoresist. Each of the mask images define parts of the optical circuit and the totality of all mask images sub |
| 7280715 |
Formation of cleaved grooves in a passivation layer formed over a surface of a wafer prior to wa |
October 9, 2007 |
| Cleaved grooves, also referred to herein as "cleave streets", are formed exclusively in a wafer passivation layer overlaying a wafer to provide for correctly aligned and sharp cleaves prior to singulation of the wafer into separate die or chips. The deployment of cleave streets is ap |
| 7239779 |
Broadband optical via |
July 3, 2007 |
| A broadband optical via provides a low loss interconnection between waveguides in two vertically adjacent planar waveguiding layers. Two waveguides, one in each planar layer, evanescently interact over an interaction length, and substantially all of the power on one waveguide is tran |
| 7236656 |
Optical transport network |
June 26, 2007 |
| An optical transport network comprises a monolithic transmitter photonic integrated circuit (TxPIC) InP-based chip and a monolithic receiver photonic integrated circuit (RxPIC) InP-based chip. |
| 7231113 |
Coupled optical waveguide resonators with heaters for thermo-optic control of wavelength and com |
June 12, 2007 |
| An integrated optical device is disclosed comprising a substrate, optical waveguide, and compound optical resonator having a temperature sensor, at least two coupled optical resonators, and a heater localized to each optical resonator. An optical input signal is coupled to one of the |
| 7224858 |
Optical transmission network with a receiver photonic integrated circuit (RxPIC) utilizing an op |
May 29, 2007 |
| An optical receiver photonic integrated circuit (RxFIC) comprises a semiconductor monolithic chip having an input to receive from an optical transmissior link a combined channel signal originating from an optical transmitter source and comprising a plurality of channel signals having |
| 7209611 |
Transmitter photonic integrated circuit (TxPIC) chips utilizing compact wavelength selective com |
April 24, 2007 |
| A monolithic transmitter photonic integrated circuit (TxPIC) chip and a monolithic receiver photonic integrated circuit (RxPIC) chip include a plurality of optical signal channels together with other active elements integrated on a semiconductor chip, which chips further include an o |
| 7208770 |
Oxygen-doped Al-containing current blocking layers in active semiconductor devices in photonic i |
April 24, 2007 |
| In photonic integrated circuits (PICs) having at least one active semiconductor device, such as, a buried heterostructure semiconductor laser, LED, modulator, photodiode, heterojunction bipolar transistor, field effect transistor or other active device, a plurality of semiconductor l |
