Linearization and Reduction of Modulated Optical Insertion Loss For Quadrature Optical Modulator
Granted: March 12, 2020
Application Number:
20200081276
An optical Mach-Zehnder superstructure modulator and method that can simultaneously linearize in-phase and quadrature components of optically modulated optical signals and reduce the modulated optical insertion loss (MOIL) by in-phase addition of the in-phase and quadrature components of an amplitude and/or phase modulated optical signal using two high-speed phase modulators embedded in the optical Mach-Zehnder superstructure modulator.
WAFER LEVEL TESTING OF OPTICAL COMPONENTS
Granted: January 23, 2020
Application Number:
20200027798
A system may include a wafer that includes ICs and defines cavities. Each cavity may be formed in a BEOL layer of the wafer and proximate a different IC. The system may also include an interposer that includes a transparent layer configured to permit optical signals to pass through. The interposer may also include at least one waveguide located proximate the transparent layer. The at least one waveguide may be configured to adiabatically couple at least one optical signal out of the…
DIFFRACTIVE OPTICAL ELEMENT FABRICATION
Granted: October 17, 2019
Application Number:
20190317256
Described herein are embodiments of a diffractive optical element (23) such as a grism. In one embodiment, the diffractive optical element (23) includes an input surface (31) configured to receive an input optical signal (29), a diffractive surface (33) adapted to spatially disperse the input optical beam (29) into a dispersed signal and an output surface (35) configured to output the dispersed signal from the diffractive optical element. The input surface (31) and the diffractive…
SPARING CONFIGURATIONS AND PROTOCOLS FOR PARALLEL FIBER OPTICS
Granted: October 10, 2019
Application Number:
20190312636
A transmitter can include: at least one primary laser emitter configured to emit primary laser light; at least one primary monitor photodiode optically coupled with the at least one primary laser emitter; and at least one spare laser emitter configured to emit spare laser light. Each spare laser emitter can be adjacent with a corresponding primary laser emitter such that a first primary laser emitter and a first spare laser emitter pair are directed through an optical system and out a…
Systems and Methods of Aberration Correction in Optical Systems
Granted: October 3, 2019
Application Number:
20190302330
Described herein is a diffraction grating (1) for use in an optical system. The diffraction grating includes a substrate (2) and an array of elongate diffracting elements (3) arranged in a grating profile across the substrate. The grating profile imparts a predefined phase change to optical beams to at least partially correct the beams for optical aberrations present in the optical system.
Method and Apparatus for Hardware-Configured Network
Granted: February 14, 2019
Application Number:
20190052392
A method for configuring hardware-configured optical links includes generating a first optical signal comprising a slow scan of wavelength channels where the slow scan has a dwell time on a particular wavelength channel. A second optical signal is generated comprising a fast scan of wavelength channels, where the fast scan has a dwell time on a particular wavelength channel and a complete channel scan time where the slow scan dwell time is greater than or equal to complete channel scan…
Method and Apparatus for Hardware Configured Network
Granted: September 13, 2018
Application Number:
20180262294
An optical network element for a hardware configured optical network includes a first optical port that receives an input optical signal comprising receive control information from the hardware configured optical network. A demodulator optically coupled to the first optical port decodes the receive control information for configuring the optical network element. A modulator having an electrical modulation input that receives transmit control information imparts a modulation onto an…
IMAGE PROJECTION SYSTEM
Granted: August 30, 2018
Application Number:
20180246325
A holographic display image projector system including an input light source for generating an at least partially coherent optical input beam and an imaging system for transforming an image representation in the Fourier domain into a corresponding holographic image in the spatial domain. The image projector includes a spatial light modulator having a reflective phase manipulating surface and being responsive to an electric control signal to generate a two-dimensional phase profile on the…
Sweep Control of an Optical Heterodyne Measurement System
Granted: July 12, 2018
Application Number:
20180195905
Described herein is a system and method of controlling an optical heterodyne measurement system (1). The measurement system (1) has a tunable laser (9) for generating a local oscillator signal, an optical input (5) for receiving an input optical signal (7) and a mixing module (13) for mixing the local oscillator signal with the input optical signal to generate an output optical measurement signal. One embodiment provides a method including the steps of: a) receiving an input electrical…
Method and Apparatus for Characterization and Compensation of Optical Impairments in InP-Based Optical Transmitter
Granted: July 12, 2018
Application Number:
20180198531
A method and apparatus for characterizing and compensating optical impairments in an optical transmitter includes operating an optical transmitter comprising a first and second parent MZ, each comprising a plurality of child MZ modulators that are biased at respective initial operating points. An electro-optic RF transfer function is generated for each of the plurality of child MZ modulators. Curve fitting parameters are determined for each of the plurality of electro-optic RF transfer…
Method and Apparatus for Characterization and Compensation of Optical Impairments in InP-Based Optical Transmitter
Granted: August 3, 2017
Application Number:
20170222725
A method and apparatus for characterizing and compensating optical impairments in an optical transmitter includes operating an optical transmitter comprising a first and second parent MZ, each comprising a plurality of child MZ modulators that are biased at respective initial operating points. An electro-optic RF transfer function is generated for each of the plurality of child MZ modulators. Curve fitting parameters are determined for each of the plurality of electro-optic RF transfer…
Polarization Diverse Wavelength Selective Switch
Granted: July 27, 2017
Application Number:
20170214482
Described herein is a wavelength selective switch (WSS) type optical switching device (1) configured for switching input optical beams from input optical fiber ports (3, 5 and 7) to an output optical fiber port (9). Device (1) includes a wavelength dispersive grism element (13) for spatially dispersing the individual wavelength channels from an input optical beam in the direction of a second axis (y-axis). The optical beams propagate from input ports (3, 5 and 7) in a forward direction…
A Calibration System For A Wavelength Selective Switch
Granted: March 16, 2017
Application Number:
20170075075
Described herein is a calibration system (25) for a wavelength selective switch (1). The switch (1) is adapted for dynamically switching optical beams (5, 7) along respective trajectories between input and output ports disposed in an array (3) using a reconfigurable Liquid crystal on silicon (LCOS) spatial light modulator device (17). The calibration system (25) includes a monitor (27) for projecting an optical monitor beam (29) through at least a portion of the switch (1) onto the LCOS…
Method And Apparatus For Hardware Configured Network
Granted: November 24, 2016
Application Number:
20160344508
An optical network element for a hardware configured optical network includes a first optical port that receives an input optical signal comprising receive control information from the hardware configured optical network. A demodulator optically coupled to the first optical port decodes the receive control information for configuring the optical network element. A modulator having an electrical modulation input that receives transmit control information imparts a modulation onto an…
High Reflectivity LCOS Device
Granted: October 6, 2016
Application Number:
20160291405
Described herein is a spatial light modulator (15) for modulating the phase, retardation or polarization state of an incident optical signal propagating in a first dimension. The optical phase modulator (15) includes a liquid crystal material (17) and a pair of electrodes (19 and 21) for supplying an electric potential across the liquid crystal material (17) to drive liquid crystals in a predetermined configuration. Modulator (15) also includes a diffractive optical element (29) disposed…
MULTI-CHANNEL TRANSCEIVER WITH LASER ARRAY AND PHOTONIC INTEGRATED CIRCUIT
Granted: June 9, 2016
Application Number:
20160161685
A laser module can include: a laser chip having a plurality of laser diodes; a focusing lens optically coupled to each of the plurality of distinct laser diodes; and a photonic integrated circuit (PIC) having a plurality of optical inlet ports optically coupled to the plurality of laser diodes through the focusing lens. The laser module can include an optical isolator optically coupled to the focusing lens and PIC and positioned between the focusing lens and PIC. The laser chip can…
WAVELENGTH DIVISION MULTIPLEXER ARRAY
Granted: November 19, 2015
Application Number:
20150334475
In an example embodiment, a WDM array includes an optical filter, N common ports, N reflection ports, and N pass ports. The N common ports may be positioned to a first side of the optical filter. N may be greater than or equal to two. The N reflection ports may be positioned to the first side of the optical filter. The N pass ports may be positioned to a second side of the optical filter opposite the first side.
NxN Optical Switch
Granted: November 19, 2015
Application Number:
20150331198
Described herein are various embodiments of a cross-connect type optical switch (E.g. 1) for switching optical beams between a plurality of optical fibers. Switch 1 includes four input/output optical fiber banks (3, 5, 7 and 9). Each fiber bank includes an array of connector ports (11, 13, 15 and 17) for connecting up to twenty optical fibers for projecting input optical beams and receiving output optical beams. Each fiber bank also includes a corresponding array of…
TRANSMISSION LINES
Granted: October 8, 2015
Application Number:
20150288049
A circuit may include a first transmission line that includes a first first-line conductor configured to transport a signal and a second first-line conductor. The circuit may also include a second transmission line that includes a first second-line conductor, a second second-line conductor electrically coupled to the second first-line conductor, and a third second-line conductor separated from and positioned between the first and second second-line conductors. The third second-line…
HYBRID PRINTED CIRCUIT BOARD CONSTRUCTION
Granted: October 8, 2015
Application Number:
20150289368
A hybrid printed circuit board is described. The hybrid printed circuit board may include a top layer, a bottom layer, and a plurality of internal layers stacked up between the top layer and the bottom layer. The plurality of internal layers may include a first internal layer below the top layer and a second internal layer above the bottom layer. The hybrid printed circuit board may include first unreinforced laminate placed between the top layer and the first internal layer. The hybrid…
