Exposing the Absurd Misinformation and Propaganda by the PNC/AFC Goons.
There is a big difference between a WAN and LAN fiber optic networks. There are two fiber optic installation projects that are going on in Guyana -a WAN built out and a Metropolitan Area Network –sort of local access network. The former entails DWDM and high speed SONET technologies. The latter is what is known as the distribution Metropolitan Access Network and is primarily low speed mappings.
The WAN network connecting Brazil and Guyana is 200km and it is a high speed single mode fiber. It is not uncommon for such a large fiber optic built out –WAN enterprise -to redo certain links including repairing splices and sometimes replacing an entire link of fiber after the initially installation are completed… keep in mind that there is no control of the none linear effects such as polarization and attenuation which are effects to a large degree by external environmental factors At that point an OTDR, dispersion, and ORL testing are done... These results- ORL, polarization dispersion, chromatic dispersion and attenuation- loss link budget are then analyzed and compared to the values initially inputted into the design calculation, In this case, I rather suspect that when testing of the entire span was completed it was discovered that the span exceed the optical budget criteria, including the linear and none linear specifications/variables of the termination equipment. So it takes time and money to identify these links and make the necessary repair as required to achieve the specifications …not at all uncommon in today’s fiber built, especially for 200km extreme/hostile environmental terrain of built out and what appears to be no amplification in the intermediate section…..I have seen many in my years of working in this field.
Spontaneous Emission