Patent ID: 6781748
Filing Date: 2004-08-24
Classification: H01S,H04B

Abstract:
An L band optical amplifier comprising:a signal line for transmitting a signal light in a first direction, the signal line including: an input; an output disposed optically downstream of the input; and a first amplifying gain medium optically disposed between the input and the output; a first laser optically aligned with the first amplifying gain medium to transmit a first pump light to the first amplifying gain medium toward the output; a first reflector disposed along the signal line between the first amplifying gain medium and the output to reflect a first bandwidth of light from the first amplifying gain medium back into the first amplifying gain medium; a second laser optically aligned with the first amplifying gain medium to transmit a second pump light to the first amplifying gain medium toward the input; and a second reflector disposed along the signal line between the first amplifying gain medium and the input to reflect a second bandwidth of light, different from the first bandwidth of light, from the first amplifying gain medium back into the first amplifying gain medium.