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DisplayPort Basics

DisplayPort Basics
What is DisplayPort? DisplayPort (DP) is a digital video and audio inference that was designed by Video Electronics Standards Association (VESA) to replace analog connection such as VGA (Video Graphics Array) and DVI (Digital Visual Interface). DisplayPorts are commonly used to connect computer systems to monitors and are not frequently found in devices such as[...]
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QSFP28 SR4LR4 etc

close up of a gray cable transceiver
QSFP28 has become the dominant form factor for 100G networks. The interconnect offers four channels of high-speed differential signals with data rates ranging from 25 Gbps up to potentially 40 Gbps, and meets 100 Gbps Ethernet (4×25 Gbps) and 100 Gbps 4X InfiniBand Enhanced Data Rate (EDR) requirements. There are many products with QSFP28 form[...]
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100G Form Factors

close up on a datacenter with blue wires
Why is the 100G QSFP28 transceiver the best choice for 100G networks? Here, we look at the different 100G form factors in the market today. This past year has seen a remarkable growth in 100G deployments fueled primarily by hyperscale datacenters and cloud services. IHS Infonetics reports that by 2019, 100-gigabit-per-second (100G) Ethernet will make[...]
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DML vs. EML Laser

bright blue light fibers and a transceiver
100G QSFP28 transceivers use different optical technologies to transmit data to different distances. Shorter reaches typically use Vertical Cavity Surface Emitting Lasers(VCSELs) and longer reaches use Electro-absorption modulated lasers (EMLs) or Directly Modulated Lasers (DMLs). The recent shortage of EML lasers in the market forced design engineers to come up with an alternate solution for[...]
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WDM Technologies : Thin Film Filters vs Arrayed Waveguide Gratings

rainbow spectrum in a box
Optical multiplexers (muxes) and demultiplexers (demuxes) form the foundation of DWDM networks deployed by the telecommunications industry. In addition to their use at terminal points, mux/demux components are also used as building blocks of advanced network elements such as optical add/drop multiplexers (OADMs) and optical-crossconnect switches. This post talks about different mux technologies currently used[...]
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Silicon Photonics

vertical columns of 1's and 0's all morphing with a blue background with white lines interconnecting
Silicon photonics has been getting much interest lately. In simple terms, silicon photonics is building advanced optical components with silicon materials and related CMOS manufacturing technology. Datacom is by the far the most important application for silicon photonics. Other emerging applications include gas/chemical sensors, circuit-level interconnects, video connectivity devices, and automotive lidars. Traditionally optical components have[...]
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