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在微棱镜侧面抽运耦合的基础上提出利用缠绕光纤的方法 ,将光纤进行并排缠绕到一跑道型的物体上 ,利用微棱镜将抽运光进行侧面多处抽运耦合进入光纤 ,利用粒子数速率方程和信号光及抽运光的传输方程进行了相关的数值模拟 ,分别讨论了在端面抽运和侧面抽运两种方式下 ,各处抽运功率相同和总抽运功率相同时增益随光纤长度变化的情况 ,发现多点耦合的确能够有效地提高信号光的增益。讨论了弯曲损耗和过剩抽运光对信号光增益的影响 ,结果表明光纤的弯曲半径不要太小以致于产生太多的损耗从而导致增益降低 ,而剩余的抽运光可忽略不计。这种方法不仅为微棱镜的制造和实验操作带来了方便 ,而且有效地提高了光纤放大器信号光的输出增益
On the basis of the pumped coupling on the side of the microprism, the method of winding the optical fiber is proposed. The optical fibers are wound side by side on a runway-shaped object, and the pump light is slightly pumped into the optical fiber by multiple sides of the pump light. Velocity equations and transmission equations of signal light and pump light. The effects of both end pumping and side pumping are discussed respectively. The gain with the same pumping power and the same total pumping power Fiber length changes, found that multi-point coupling can indeed effectively improve the signal light gain. The effects of bending loss and excess pumping on signal gain are discussed. The results show that the bend radius of the fiber should not be so small as to cause too much loss, resulting in a loss of gain with negligible remaining pump light. This method not only facilitates the fabrication and experimental operation of the microprisms, but also effectively increases the output gain of the signal light of the fiber amplifier