OPTICAL AMPLIFICATION APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a low-cost optical amplification apparatus that enables efficient amplification by being excited at 1.5xμm. SOLUTION: An optical fiber 9 for excitation made of erbium (Er)-doped optical fiber is connected between the output end of a first excitation light source 3 for forward excitation and a first optical multiplexer 4. A 1.5μm band ASE (natural emission light) is generated by excitation light from the first excitation light source 3. The ASE is introduced to the optical fiber 3 for amplification via the first optical multiplexer 4 to amplify signal light. COPYRIGHT: (C)2003,JPO