Fiber Raman Amplifier (FRA) is also a relatively mature optical amplifier. In a FRA, the optical signal is amplified due to stimulated Raman scattering (SRS). In general, FRA can is divided into lumped type called LRA and distributed type called DRA.
National Sibling Day is a day to appreciate and cherish your brothers and sisters. Siblings are truly a special blessing that we probably all too often take for granted. They are often our best friends and supporters through life. Another reason to celebrate is that not everyone is lucky enough to have siblings.
Home > Important Days > Opposite Day > Opposite Day 2016. The 2016 Opposite Day is on Monday, January 25th. National Opposite Day is an informal celebration of doing things the wrong way 'round. It's a welcome way to shake up a tired daily routine during the bleakest time of year. Children and adults alike can join in with the lighthearted, backward fun.