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.
National Nurses Day, also known as National RN Recognition Day, is always celebrated on May 6 th and opens National Nurses Week. National Nurses Week begins each year on May 6 th and ends on May 12 th, the birth date of Florence Nightingale.