Blair Steve, Heebner John E, Boyd Robert W
Opt Lett. 2002 Mar 1;27(5):357-9. doi: 10.1364/ol.27.000357.
We show that the nonlinear phase shift produced by a ring resonator constructed from a given nonlinear optical material can be greater than the phase shift produced by a single pass through an infinite length of the same material when linear and nonlinear absorption are taken into consideration. The figure of merit (defined by the phase shift times the throughput) also improves for the ring resonator over that of the native nonlinear absorbing material. We finally show that these benefits of using the ring resonator as a nonlinear phase-shifting element can enhance the switching characteristics of a Mach-Zehnder interferometer.
我们表明，当考虑线性和非线性吸收时，由特定非线性光学材料构成的环形谐振器产生的非线性相移可能大于光单次通过无限长的同一种材料所产生的相移。品质因数（由相移乘以吞吐量定义）对于环形谐振器而言也比天然非线性吸收材料有所提高。我们最终表明，将环形谐振器用作非线性相移元件的这些优点可以增强马赫曾德尔干涉仪的开关特性。
