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.
Calendar and Events. Recognizing National Immunization Awareness Month (NIAM) NIAM highlights the value of vaccines for people of all ages. National Immunization Awareness Month (NIAM) is an annual observance held in August to highlight the importance of vaccination for people of all ages. NIAM was established to encourage people of all ages to make sure they are up to date on the vaccines recommended for them.