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.
ORLANDO, Fla., Feb. 11, 2013 /PRNewswire-USNewswire/ -- For those who find the requirement of sending cards, candy, or flowers to their significant other on Valentine's Day a bit stifling, a relatively new national holiday held the following day could be the answer. February 15 is National Singles Awareness Day (S.A.D.). And there's nothing sad about it. In fact, the day is a celebration of all the benefits of being single â like being in control of the remote, sleeping in, and taking a spontaneous trip to Vegas without checking in with anybody.