Based on Dell’Oro Group report, the Crossover Points of 40G to 400G Ethernet switching will be at the end of year 2019, and the Crossover Point of 100G to 400G Ethernet switching is at the mid of year 2010. Before we move to the era of 400G, Understanding the impact of these new 400G PMDs […]
The 400GBASE-SR4.2 (BiDi) Standard was announced by the 400G Bidirectional (BiDi) MSA (Multisource Agreement) Group in the year 2018. The specification will be named 400G-BD4.2, to identify the bidirectional use of four lasers each of two colors. Using the 400G-BD4.2 specification, two transceivers communicate over lengths up to 70 meters (OM3 MMF Multimode fiber), 100m […]
The letters are reach specifications, and the number refers to the number of optical channels: Description Connector Type SR8: “SR” refers to 100m reach using multi-mode fiber, and “8” implies there are 8 optical channels. Each of the 8 optical channels from an SR8 module are carried on separate fibers, resulting in a total of […]
The OSFP stands for an “Octal Small Form-factor Pluggable”. It is described as an “Octal” module because the electrical interface of an OSFP connector consists of 8 electrical lanes, running at 50Gb/s each, for a total of bandwidth of 400Gb/s. OSFP SR8, 8x50G Optical transceiver module is designed for use in 400 Gigabit links over […]
The QSFP-DD stands for a “Quad Small Form-factor Pluggable (QSFP) – Double Density (DD)”. The QSFP-DD connector also has 8 electrical lanes. The QSFP-DD form factor is similar to the QSFP form factor, except a second row of electrical contacts has been added to the QSFP connector in order to increase the number of high […]
Was ist OM5? OM5 geht einen Schritt weiter. Wie man aus der Tabelle ersehen kann, unterscheiden sich die Eckdaten bei 850nm nicht von OM4, jedoch ist das Übertragungsfenster vergrößert worden, so dass ein nutzbarer Wellenlängenbereich von 850 bis 953nm zur Verfügung steht (WBMMF = Wide Band Multimode Fiber). Mit den heute üblichen VCSEL Lasern als […]
Features: Low cost: SR8 is the cost optimized 400G end to end solution for greenfield new install/ brownfield upgrade for <50m reach. Flexibility: 400G-SR8 offers flexibility of fiber shuffling with 50G/100G/200G configurations. It also supports breakout at different speeds for various applications: compute, storage, flash, GPU, and TPU. High density: 400G-SR8 OSFP/QSFP DD transceiver can […]
The SFP-DD MSA Group (Small Form Factor Pluggable Double Density Multi Source Agreement Group) releases the v2.0 specification for the SFP-DD pluggable interface. This new release dedicated to cultivating the development of next-generation SFP form factors used in high-speed DAC (Direct Attach Cable) and AOC (Active Optical Cable) cabling, and optical transceivers, the MSA consortium […]
The Quad Small Form Factor Pluggable Double Density (QSFP-DD) MSA Group (Multi Source Agreement Group) announced the release of an updated 4.0 Hardware specification for the QSFP-DD form factor at September 18, 2018. The latest hardware specification to address the industry need for an improved high-density, high-speed networking solution. Other notable features to the updated […]
What will the 400G BiDi MSA group define? The MSA group is dedicated to defining optical data link specifications based on a dual wavelength bidirectional transmission technology on multimode fiber (MMF) that enables a reduction in fiber count relative to other solutions. The 400 Gbps BiDi solution leverages both the widely adopted 40 Gbps and […]
