Multicast optical switch
Granted: October 13, 2015
Patent Number:
9158072
An optical switch configured to switch optical beams between one or more first ports and two or more second ports includes a wavelength independent beam splitter that simultaneously splits the optical beams from each of the first ports into a plurality of separate sub beams. A reflective wavelength independent switching unit selectively reflectively direct each the sub beam along respective predetermined trajectories such that predetermined sub beams are coupled between the first and…
Accelerating the aging of multiple lasers
Granted: October 13, 2015
Patent Number:
9157949
A method of accelerating the aging of a laser to thereby determine the reliability of the laser. The method includes an act of providing a laser die for reliability testing, an act of applying a plurality of short signal pulses to the laser die so as to simulate the aging of the laser die, and an act of ascertaining the reliability of the laser die based on its response to the plurality of short signal pulses.
Electromagnetic radiation dissipating devices
Granted: October 6, 2015
Patent Number:
9154124
Electromagnetic radiation (“EMR”) dissipating devices. One example embodiment includes an electrical circuit including an EMR source configured to generate an output signal at an operating bit rate. The output signal may include an EMR component. The electrical circuit may also include an EMR dissipating device electrically coupled to the EMR source and configured to have a resonance frequency corresponding to the operating bit rate.
Protecting against counterfeit electronic devices
Granted: September 29, 2015
Patent Number:
9148286
An embodiment of the invention includes a method of authenticating a second device connected to a first device. The method includes transmitting a first data string from the first device to the second device and receiving a second data string at the first device from the second device. The method also includes generating a third data string using an alteration key at the first device and comparing the third data string and either the first data string or the second data string. The…
Optical channel monitor
Granted: September 29, 2015
Patent Number:
9148230
In one example, an optical channel monitor includes a tunable filter, a deinterleaver, first and second optical receivers, and a control module. The tunable filter is configured to receive an optical signal having a plurality of channels spaced at a nominal channel spacing. The deinterleaver has an input with an input channel spacing Fi, an even output, and an odd output, the input being connected to an output of the tunable filter. The nominal channel spacing is between about one and…
Driver circuit with asymmetric boost
Granted: September 29, 2015
Patent Number:
9148129
A circuit may include an input node configured to receive a signal and an output node configured to be coupled to a load. The circuit may also include a first circuit coupled between the input node and the output node, the first circuit being configured to receive the signal and drive the signal on the output node at a first voltage. The circuit may also include a signal adjust circuit configured to adjust a current of the signal driven by the first circuit. The signal adjust circuit may…
Modular device for an optical communication module
Granted: September 29, 2015
Patent Number:
9146367
A modular device for an optical communication module configured to be coupled to an optical transmission medium. The modular device may include a first edge and a second edge and N number of electrical circuit channels between the first and second edges. Each electrical circuit channel may include at least one element configured to provide functionality for communicating optical signals through the optical transmission medium. The modular device may also have a width between the first…
Latch mechanism for communication module
Granted: September 29, 2015
Patent Number:
9146366
Latch mechanism for communication modules. In an example embodiment, a module latch mechanism includes a follower configured to be slidingly positioned relative to a housing and a driver configured to be rotatingly positioned relative to the housing. The follower includes a first arm configured to facilitate selective engagement of the housing with a host device. The follower may further include a fastening mechanism configured to facilitate selective engagement of the follower with the…
Optical component arrays in optical connectors
Granted: September 22, 2015
Patent Number:
9140866
An example embodiment includes an optical connector. The optical connector includes a printed circuit board (PCB), multiple optical components, multiple optical fibers, and a lens assembly. The optical components are mounted to the PCB. Additionally, each of the optical components includes an aperture. The lens assembly is positioned on the PCB. The lens assembly defines a cavity in which the optical components are positioned. Additionally, the lens assembly defines optical fiber seats…
Network device management using an RFID system
Granted: September 15, 2015
Patent Number:
9137589
Network device management using an RFID system. In one example embodiment, a method of determining the status of a network device may include communicating between a host computing device and a network device, communicating between the host computing device and an RFID reader, storing one or more status parameters of the network device in an RFID tag that is coupled to the network device, sending an interrogation signal from the RFID reader to an RFID tag, receiving the one or more…
Cable clip and cable management structures for use with an optoelectronic module
Granted: September 15, 2015
Patent Number:
9134492
An example embodiment includes a cable clip. The cable clip is configured to maintain engagement of an optical interface with a lens assembly included in an optoelectronic module. The cable clip includes a forward section, a clip body, a connector retention mechanism, a lens latch, and a release lever. The clip body is connected to the forward section at a clip shoulder. The connector retention mechanism is configured to retain the optical interface and extends from the clip body. The…
Constraining ball lens in an optical subassembly
Granted: September 8, 2015
Patent Number:
9128260
In one embodiment, an optical subassembly includes a housing, a ball lens, a constraining insert, and a ball lens constraint. The housing includes a fiber receptacle formed in a first end of the housing and a second receptacle formed in a second end of the housing opposite the first end. The fiber receptacle and second receptacle define a cavity through the housing from the first end to the second end of the housing. The ball lens and the constraining insert are disposed within the…
Vertical cavity surface emitting laser with undoped top mirror
Granted: September 1, 2015
Patent Number:
9124069
A VCSEL with undoped top mirror. The VCSEL is formed from an epitaxial structure deposited on a substrate, and a periodically doped conduction layer is coupled to the undoped top minor. A periodically doped spacer layer is coupled to an active region. An undoped bottom minor coupled to the periodically doped spacer layer. A first intracavity contact is coupled to the periodically doped conduction layer and a second intracavity contact is coupled to the periodically doped spacer layer.
Host connector
Granted: August 18, 2015
Patent Number:
D736712
Method for modulating a carrier light wave
Granted: August 11, 2015
Patent Number:
9104085
Method for modulating a carrier light wave with symbols, led through a modulating interferometer, the total path phase shift being the sum of a respective first, second, third or fourth static phase shift and a respective first, second, third or fourth variable modulating phase shift amount. For each of at least two symbols: the first variable modulating phase shift equals the sum of the first pair phase shift and the common phase shift; the second variable modulating phase shift equals…
Multi-pole optical signal switch
Granted: August 11, 2015
Patent Number:
9103991
An optical switch having multiple input and output ports directs any number of WDM signals, each arriving at a respective input port, to any one of the output ports. The optical switch includes an array of LC pixels, each positioned to receive a WDM signal transmitted through one of the ports, and an array of reflective elements, each associated with one of the LC pixels. The LC pixels are controlled to cause a WDM signal incident thereon to attain an attenuation state while an output of…
System and method of electromagnetic radiation control
Granted: August 11, 2015
Patent Number:
9103725
A method of compensating for electromagnetic radiation. The method may include measuring electromagnetic radiation emanating from circuitry at a first frequency and adjusting at least one of the electrical settings of the circuitry based on the measurement of the electromagnetic radiation to reduce the electromagnetic radiation at the first frequency emanating from the circuitry.
Reinforced multi-body optical devices
Granted: August 4, 2015
Patent Number:
9097908
Disclosed in one example embodiment is a method for fabricating a reinforced multi-body optical device. One method involves applying a coating to sides of an interior plate and bonding two plates to either side of the interior plate. The bonded plates are diced at an angle that is not orthogonal to the bonded plates. The top and bottom portions of a diced section are removed to form a multi-body polarization beam splitter (PBS) having a generally rectangular perimeter. A supporting plate…
Methods of modulating a quantum dot laser and a multisection quantum dot laser
Granted: July 21, 2015
Patent Number:
9088127
A multisection quantum dot laser (7) comprising at least first (8) and second (9) sections, each section (8, 9) comprising a semiconductor substrate (2) comprising p (3) and n type (4) layers and a quantum dot layer sandwiched therebetween; the semiconductor substrate (2) comprising a back electrical contact in electrical contact with one of the p and n type layers and a tuning electrical contact (13, 14) in electrical contact with the other of the p and n type layers; the quantum-dot…
Simplified and shortened parallel cable
Granted: July 14, 2015
Patent Number:
9081156
One embodiment includes a connector comprising a connector housing, a ferrule, and a crimp ring. The connector housing has inner and outer surfaces extending between forward and rear ends of the connector housing. The inner surfaces defined a passageway extending lengthwise between the forward and rear ends. The connector housing includes at least one protrusion formed on one of the outer surfaces that is configured to engage a corresponding connector engaging structure of an alignment…
