Microsoft Technology Licensing, LLC

Jamie Dorea Gaudette

Yawei Yin

Denizcan Billor

Nikolaj Skallerud Bjorner

Rachee Singh

Binbin Guan

John Frederick Arnold

Tristan Naoki Struthers

Lihua Yuan

Systems and methods are provided for implementing a free space optical backplane structure including a body and a plurality of mirrors. The body includes a chamber, a front panel, and a plurality of apertures disposed in the front panel, the plurality of apertures including a first set of apertures and a second set of apertures. The plurality of mirrors includes first and second arrays of mirrors mounted at first and second sets of heights, respectively, within the chamber, and is aligned with the first and second sets of apertures located in the front panel. The first and second arrays of mirrors are arranged to direct laser signals travelling through free space that are transmitted from or to a first device through the first set of apertures, between the first and second arrays of mirrors, and to or from a corresponding second device through the second set of apertures.

Optical transport terminal node architecture with free space optical backplane

Systems and methods are provided for determining an optical bypass for an inter-regional wide area network (WAN) for regions of server facilities of a cloud service provider. In particular, the optical bypass connects non-adjacent regional server centers of the WAN by eliminating needs of data conversions at intermediate regional server centers. The determining the optical bypass includes receiving a WAN topology data, capacity and demand information about the WAN. The determining includes an objective function to maximize a number of network resources to free up by determining a revised data flow and bandwidth allocations by introducing the optical bypass in the WAN. The disclosed technology transmits the determined data traffic flow and resource allocation information of the optical bypass, causing a network traffic enforcers to reconfigure the WAN.

Methods for capacity provisioning in wide area networks using optical bypassing

Increasing a resolution of an error rate detectable on a link between two network nodes includes transmitting an IP-in-IP encapsulated test packet back and forth between the two network nodes. The test packet includes a series of nested data packets having alternating destinations between the two network nodes. The test packet is transmitted on the data plane of the network, thereby increasing the resolution of the detectable error rate.

Network link testing using IP-in-IP encapsulation

A preFEC BER of a selected optical link is determined. A FEC Detected Degrade (FDD) threshold, FEC Excessive Degrade (FED) threshold, and FEC limit threshold are obtained for the selected optical link. The FDD threshold is less than the FED threshold and the FED threshold is less than the FEC limit. Based on the FDD threshold, FED threshold, the FEC limit, and a determination that a postFEC BER==0, it is determined whether a link down condition of the selected optical link can be asserted or de-asserted.

Hysteresis-based link flapping prevention in an optical network

In an optical communications network, the supervisory control signal is duplicating at the OSI layer 2 or layer 3 level to generate a primary supervisory control signal and a secondary supervisory control signal. Access to the primary supervisory control signal is enabled at a network interface of a network device. In response to detecting a failure of the optical communications network or the device, access to the primary supervisory control signal is disabled and access to the secondary supervisory control signal is enabled.

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Kirkland, WA, United States of America

Jamie Dorea Gaudette