| 摘要 |
PROBLEM TO BE SOLVED: To provide a high-power optical amplifier which is effective for multiple-output applications, such as CATV and WDM systems. SOLUTION: This high-power optical amplifier 40 with multiple outputs is formed by using a preamplifier stage 42 (such as an erbium-doped fiber amplifier), followed by a power splitter 44 or wavelength division multiplexer router (forming the desired number of M separate optical outputs). Each preamplified and split output is then amplified separately in a high-power amplifier 46, such as an erbium-ytterbium co-doped amplifier. The power loss associated with the signal splitting thus occurs, prior to imparting of the high power gain onto the optical signals, allowing a plurality of high power optical outputs to be formed. |
