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公开(公告)号：US12184399B1
公开(公告)日：2024-12-31
申请号：US17957063
申请日：2022-09-30
Applicant: Amazon Technologies, Inc.
Inventor： Omid Momtahan , Aliasghar Eftekhar , Alaa Adel Mahdi Hayder , Poorya Saghari
Abstract: An optical communication system comprises a plurality of linked single-wavelength coherent optical transceivers configured to communicate via short-reach data-center links at a common reference wavelength, each transceiver including a single single-wavelength laser source that is used to produce a source beam at a source beam wavelength, the source beam being used to produce transmit beams sent by the transceiver and for mixing with one or more receive beams received by the transceiver; wherein each of the transceivers includes a thermo-electric cooler configured to control a temperature of the single-wavelength laser source around a temperature setpoint that locks the source beam wavelength to the common reference wavelength; wherein each transceiver includes a wavelength deviation detector configured to detect a wavelength deviation between the source beam wavelength and the wavelength or wavelengths of the one or more receive beams or between the source beam wavelength and the common reference wavelength, wherein the wavelength deviation detector is configured to detect a threshold amount of wavelength deviation that is indicative that the single-wavelength laser source is problematic or a single-wavelength laser source of a separate transceiver coupled to send the one or more receive beams is problematic, wherein each transceiver is configured to indicate the wavelength deviation or problematic characteristic in order to identify problematic laser sources and thereby prevent the linked network of transceivers from communicating at a linked network wavelength that is marginal or out-of-range in relation to the common reference wavelength.
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公开(公告)号：US11967994B1
公开(公告)日：2024-04-23
申请号：US17490973
申请日：2021-09-30
Applicant: Amazon Technologies, Inc.
Inventor： Poorya Saghari , Alaa Adel Mahdi Hayder , Omid Momtahan , Venkata Satish Kumar Vangala , Aliasghar Eftekhar
CPC classification number: H04B10/40 , H04B10/0793 , H04B10/25 , H04J14/0227 , H04Q11/0005 , H04Q11/0067 , H04Q2011/0039
Abstract: An optical transceiver includes a built-in optical switch to switch between diverse fiber paths in switches in a datacenter or in switches between two datacenters. The built-in optical switch can be used to switch between racks in a datacenter to increase capacity for any rack that requests it. A controller, which receives a signal from a server computer in one of the racks, can be external to the optical transceiver or within the optical transceiver. In either case, the server computer can be provided with additional bandwidth when needed. For connections between datacenters, the built-in optical switch allows for optical line protection, but without the need for a splitter circuit, which incurs a significant power loss and requires a more expensive transceiver. Consequently, the built-in optical switch within an optical transceiver can be used in a variety of contexts to increase efficiency and reduce overall costs for network devices.
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公开(公告)号：US11462872B1
公开(公告)日：2022-10-04
申请号：US17039637
申请日：2020-09-30
Applicant: Amazon Technologies, Inc.
Inventor： Paul Yu , James Paul Rivers , Poorya Saghari , Alaa Adel Mahdi Hayder
Abstract: A cage assembly may define a part of a computing appliance. The assembly can include a cage formed by walls and defining a continuous interior volume bounded by a top face, a bottom face, a right face, a left face, a front face, and a rear face. A first edge connector may be within a leftward portion of the interior volume. A second edge connector may be within a rightward portion of the interior volume and positioned laterally from the first edge connector. The arrangement may permit engagement with multiple individual-width plugs (e.g., each bearing an individual paddle card) or a single plug (e.g., bearing multiple paddle cards spaced laterally from one another and aligned for engagement with the first and second edge connectors within the cage).
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公开(公告)号：US10797792B1
公开(公告)日：2020-10-06
申请号：US16217841
申请日：2018-12-12
Applicant: Amazon Technologies, Inc.
Inventor： Omid Momtahan , Waruna Fernando , Poorya Saghari , Venkata Satish Kumar Vangala
IPC: H04B10/079 , H04B10/25
Abstract: Information from optical modules can be combined with information from network switches to help detect and pinpoint problems along a network communications path. A control path between a network switch and a microcontroller of an optical module can be used to obtain monitoring and debugging data from a digital signal processor (DSP) of the optical module. The DSP data can be used with performance data from the network switch to separately determine the health of the electrical and optical sections of the communications link. The ability to pinpoint problems with the communications link enables appropriate remedial actions to be determined and taken automatically.
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