Raman effect amplifier, has photonic crystal fiber whose fast and slow axes are reversed with respect to fast and slow axes of another crystal fiber, where fibers have birefringence, and Raman pump composed of single semi-conductor diode

摘要

The amplifier (12) has two polarization maintaining photonic crystal fibers (15, 16) associated with a Raman pump (17) transmitting a pump field in one of the photonic crystal fibers, where the pump is composed of a single semi-conductor diode. The fiber (16) has fast and slow axes (A-R16, A-L16) reversing with respect to fast and slow axes (A-R15, A-L15) of the fiber (15) such that a group shifting induced in an optical signal by the fiber (15) is compensated by a group shifting induced in the optical signal by the fiber (16), where the fibers have birefringence between 0.001 and 0.0001. Independent claims are also included for the following: (1) a method for manufacturing a Raman effect amplifier (2) a method for amplifying an optical signal.