Coherent reports major advance in VCSELs

Coherent reported a  significant breakthrough in improving the bandwidth of its vertical-cavity surface-emitting laser (VCSEL), paving the way for use in next-generation optical interconnects that will operate at 200 Gbps per lane and thereby enabling optical transceivers with 1.6 Tbps capacity.This improvement comes in the form of lithographic-aperture VCSELs, marking a significant departure from the oxide-aperture VCSELs that are the state-of-the-art...

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Keysight bids for Spirent, topping Viavi’s offer

 Keysight Technologies announced its intention to acquire the entire issued and to be issued share capital of Spirent Communications PLC for a cash consideration of 199 pence per Spirent share, which values Spirent at approximately £1,158 million (US$ $1,463 million1), on a fully diluted basis. Spirent shareholders will also be entitled to receive a special dividend of 2.5 pence per Spirent share, in lieu of any final dividend for the year ended...

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Lumentum enhances its 800ZR+

Lumentum announced significant performance enhancements to its 800ZR+ transceivers. These improvements enable the 800ZR+ modules to serve a wider range of applications, including expanded use in metro and regional networks through the ability to interface directly into routers. Additionally, the enhanced performance modes now make 400ZR+ and 600ZR+ operation suitable for true long-haul applications, with OSNR and dispersion tolerance enabling reaches...

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Credo and Wistron demo 800G Linear Receive Optics

Credo hosted a demonstration of Linear Receive Optics (LRO), using its Credo Dove 850 DSP, along with the 51.2 Tbps Wistron DS-6183-64O 64-port 800GbE switch. In an LRO transceiver, or Active Optical Cable (AOC), only the transmit path from the electrical input to the optical line side output includes a DSP for signal retiming and equalization. All three 800G OSFP LRO modules provided by Credo partners for this demonstration seamlessly...

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Coherent samples bi-di circulator adaptor

Coherent introduced a bi-di circulator adaptor that enables bi-directional transmission over a single fiber between two transceivers. By enabling bi-directional transmission, the fiber count is reduced by a factor of two, which allows significant cost and space savings.The Coherent bi-di circulator adaptor is a completely passive device, compatible with all transceiver LC connector ports, offering low insertion loss as well as high directivity in...

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Dell'Oro: Telecom Capex Declined in 2023

 Preliminary findings show that worldwide telecom capex, the sum of wireless and wireline/other telecom carrier investments, declined for the full year 2023 in nominal USD terms, recording the first contraction since 2017, according to a recent report from Dell'Oro Group. This deceleration in the broader capex spend is consistent with the aggregate telco equipment slump previously communicated for the six Dell'Oro telecom programs (Broadband...

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TRUMPF demos 100G VCSEL for 800G transceiver

 TRUMPF Photonic Components demonstrated 100Gbps VCSEL performance in an 800G tranceiver by Optomind. TRUMPF argues that for interconnect distances of up to 100 meters, VCSELs are the best solution in terms of power, cost and the productivity of SR modules. TRUMPF is offering both VCSELs and photodiodes as a matching pair solution, in singlets, 1x4 arrays and 1x12 arrays for 14G and 25G for the NRZ applications. The same is offered for...

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MaxLinear announces “Rushmore” 200G/lane PAM4 DSPs

Building on its Keystone family of 5nm 100G/lane DSPs, MaxLinear announced the development of its fourth generation 200G/lane PAM4 SERDES (Serializer/Deserializer) and DSP family, Rushmore. The Rushmore family encompasses a diverse array of variants tailored to meet the evolving needs of modern data centers and telecommunications networks. This includes support for fully re-timed optical modules, half re-timed optics, and active electrical cables...

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OE Solutions extends its transceiver portfolio

OE Solutions introduced two new Digital Coherent Optical (DCO) transceiver modules for applications in access networks. Both are available with optional EDFA booster amplifier and tunable optical filter.Reduced-power 100G QSFP28 DCO transceiver -- a result of OE Solutions’ continued focus on reducing the power consumption of coherent transceivers for access applications. Current improvements to the designs enable a device with a maximum power consumption...

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MACOM demos 100G/Lane Switch to Server Link with LPO

MACOM is demonstrating switch-to-server interoperability of its linear drive 100G per lane components:MACOM PURE DRIVE Transimpedance Amplifiers and Laser DriversBroadcom’s BCM57608 Series Ethernet Network Interface Card (“NIC”)Broadcom’s Tomahawk 5 Ethernet Switch ChipThe switch-to-server link represents an important use case for the linear drive architecture, which can provide an optimized interconnect solution for Cloud infrastructure. Linear...

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