Infinera Corporation

Cypress Semiconductor Corporation

Steve Sanders

Omer Faruk Yilmaz

Stephane St-Laurent

Matthew L Mitchell

Jonathan Michael Buset

Xian Xu

Clinton Carlisle

Jahja I Trisnadi

Biao Lu

Yansun Xu

Ke-Cai Zeng

Brett Alan Spurlock

Changyu Lin

Methods, systems, and optical power controllers are disclosed. Various problems caused by the use of a single L0 power controller in the prior art are addressed by using first and second L0 power controllers with the first L0 power controller managing first optical components with the optical network, and the second L0 power controller managing second optical components within the optical network.

External network to network interface and optical express power controls

An apparatus is described. The apparatus comprises a downstream wavelength selective switch having an input port, an optical path operable to carry an optical signal, an optical source providing amplified spontaneous emission (ASE) light, an optical switch having a first input coupled to the optical path, a second input coupled to the optical source and receiving the ASE light, and an output coupled to the input port of the downstream wavelength selective switch. The optical switch couples either the first input or the second input to the output. Further included is a photodiode operable to monitor the optical signal, detect an optical loss of signal of the optical signal, and output a switch signal to the optical switch such that the optical switch couples the second input receiving the ASE light to the output whereby the ASE light is directed to the input port of the downstream wavelength selective switch.

Fast transient suppressor for optical transmission systems

An optical network and a method are described. In the method, an orchestrator of an optical communication system receives an operation to execute, the operation being to activate or deactivate a service within a transmission signal of the optical communication system, the optical communication system having a span and an amplifier coupled to and supplying optical signals into each span. Network status data for each span within the optical communication system is retrieved, and the list of operations is analyzed with the network status data including existing data traffic on the fiber optic line to select a subset of the list of operations to execute that maintains the transmission signal below a bit error rate threshold. The orchestrator issues one or more signals to cause the one or more service within the subset of the list of operations to be activated or deactivated on the optical communication system.

Method and apparatus for optical power controls in optical networks

An optical device having an amplifier and a controller is described. The amplifier is configured to amplify an optical signal in at least one of the C-Band or the L-Band. The controller includes a processor and a non-transitory computer readable medium. The non-transitory computer readable medium storing computer executable code that when executed by the processor causes the processor to: select a target tilt and gain setting from a plurality of target tilt and gain settings stored in the non-transitory computer readable medium based on the type of fault event message responsive to a fault event message affecting the C-band or the L-Band. The selected and pre-calculated target tilt and gain settings are applied to the amplifier.

Method and apparatus for rapid recovery of optical power after transient events in C+L band optical networks

An optical network is described that has a first ROADM node, a second ROADM node, and an optical transmission line establishing optical communication between the first ROADM node and the second ROADM node. The optical transmission line including an in-line amplifier node having a total input power and a total output power. The in-line amplifier node has a first monitoring tool configured to measure input optical power of the in-line amplifier node, and a second monitoring tool configured to measure output optical power of the in-line amplifier node. A software defined L0 network controller has circuitry configured to receive the optical power measured by the first and second monitoring tools from the in-line amplifier node, and to configure at least one of a gain and a gain tilt of the in-line amplifier node.

System architecture for power control in an optical transmission line

Method of control for the maintenance of the optical power in a ROADM network

Finger navigation methods, devices and systems are disclosed. In one embodiment the system comprises a light source configured to radiate a light beam towards a tactile surface. The system also comprises a photo detector module configured to sense speckle beams emitted by a target surface navigating the tactile surface in response to light hitting the target surface. The system further comprises a processor configured to track a movement of the target surface with respect to the tactile surface based on output from the photo detector module and a conductor structure for capacitive sensing of the target surface with respect to the tactile surface. The conductor structure is configured to determine a plurality of navigational functionalities based on the capacitive sensing of the target surface with respect to the tactile surface, including at least one of single click, double click, and scrolling.

Growing community of inventors

Los Altos, CA, United States of America

Steve Sanders