Before the comparison of the different optical amplifiers, letâs take a closer look at fiber optic amplifer. 1  In general, a repeater includes a receiver and transmitter combined in one package. The receiver converts the incoming optical energy into electrical energy.
From Wikipedia, the free encyclopedia. National Wildlife Refuge is a designation for certain protected areas of the United States managed by the United States Fish and Wildlife Service. The National Wildlife Refuge System is the system of public lands and waters set aside to conserve America's fish, wildlife and plants.he National Wildlife Refuge System is dealing with such issues as urban intrusion/development, habitat fragmentation, degradation of water quantity and quality, climate change, invasive species, increasing demands for recreation, and increasing demands for energy development.
n. 1. a. The natural environment in which a species or group of species lives: good coyote habitat; managing wildlife habitat. b. A particular kind of natural environment: woodland and prairie habitats.c. An artificial environment created for an animal to live in: the lion habitat at the zoo.. the natural environment of an organism; place that is natural for the life and growth of an organism: a jungle habitat. 2. the place where one is usu. found. 3. a special environment for living in over an extended period, as an underwater research vessel.