Hello, everyone! Today, I want to explain the difference between EDFA and Raman optical amplifiers. Long optical links require amplification of the signal. There are two types of amplifiers - EDFA and Raman. The question is what are the differences between these two amplifiers? And which amplifier should be applied? It...
Hello, everyone! This post is dedicated to the Erbium-doped fiber amplifier(EDFA). I hope you're interested. Working Principles of EDFAs Erbium-doped fibers are the key components of EDFAs and contain Er3+ ions of a certain concentration. Before illustrating the working principle of EDFAs, this course introduces the energy level diagram of erbium ions....
Hello, everyone! This post introduces the differences between DWDM and OTN. I hope you like it! What is WDM? WDM: Wavelength Division Multiplexing Strictly speaking, WDM refers to a technology that allows optical signals at multiple wavelengths to transmit over one optical fiber. Typical WDM model: Based on the number of wavelengths in use, the...
Hello everyone! In this post, I will share the commissioning of the Optical Power of OptiX OSN 1800 V. I hope you'll like it! Scenario Description 1. Two OptiX OSN 1800V support two OCH trails in point-to-point networking mode. Topology: 2. Optical fiber connection (Both physical and logical fibers are connected, and no Spectrum...
Optical fiber transmission is a kind of optical waveguide made of glass or other materials. The basic principle of light transmission in an optical fiber is total reflection. When light is incident from a light-density medium (with a relatively high refractive index) to a light sparse medium (with a relatively...
Hello, everyone! This post will share the basics of MPLS, and I hope you enjoy it！ What is MPLS? At first, MPLS is a protocol used to improve the forwarding speed of routers. However, MPLS has become an important standard for expanding the scale of IP networks because MPLS has outstanding performance...
Hello friends, do you know what DCN is? Let's see it. Data center networks are the infrastructure of data center services, requiring computer systems, storage systems, communications systems, communication connections, and management and monitoring systems. Enterprises or organizations can store, manage, and advertise information in data centers. The CE series switches...
This time, I will share with you a case about the Cross-connect capacity of the OptiX OSN 3500 Different cross-connect boards have different cross-connect capacities. lists the cross-connect boards and the corresponding cross-connect capacities supported by the OptiX OSN equipment. Board Higher Order Cross-Connect Capacity Lower Order Cross-Connect Capacity Access Capacity of a Single Subrack Remarks N1GXCSA 40...
Hello, everyone! This post shares your knowledge about dispersion. I hope you like it! Chromatic Dispersion (CD) A form of dispersion where optical pulses are spread because different wavelengths are transmitted at different speeds in optical fibers and the periods for different wavelengths to traverse the same distance are different. Polarization Mode Dispersion...
Issue Description Alarm Information We can not login on the NE after node had been configured. Handling Process 1. checked the current alarms on the optical level on the neighbors. The optical level was ok. 2. connect through Navigator on the one P.Victoriei node, checked NE configuration and collect the "oplog" 3. Checked in U2000 the...
Issue Description one node B is connected to OSN 500 slot EFS8 port 1 for Data service, the port type is Access with default VLAN x, and this port is assigned to ELAN service VCTrunk1 type access default vlan also x. customer want to add a vlan 1xx in the port of...
Issue Description SLQ4 board is hardly fully utilize in slot 1 to slot 4 in OSN 3500 although the slot capacity can support until 5G. NG-SDH manual: When the cross-connect capacity is 80 Gbit/s or 200 Gbit/s（S/I XCS）, for the board housed in any of slots 1–4 and 15–16, two optical interfaces can be configured. For the board housed in any...
