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Explanation of asymmetric switch response of three-arm directional couplers in Ti:LiNbO3 using strong coupling theory

1988; Elsevier BV; Volume: 66; Issue: 5-6 Linguagem: Inglês

10.1016/0030-4018(88)90410-5

1873-0310

R.R.A. Syms, R.G. Peall,

Nonlinear Optical Materials Research

Previous experimental measurements of switch response of strongly-coupled three-arm integrated optic directional couplers in Ti:LiNbO3 have shown a marked asymmetry with voltage. This effect is not predicted by simple coupled mode theory. Good agreement with the experimental measurements may however be obtained using a modified scalar coupled mode theory, including the effects of modal overlap and correct description of the bend sections.