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Beam‐propagation analysis of tapered nonlinear directional couplers
Author(s) -
Lee Hojin,
Lee Sangsun,
Chang Hosung,
Kim KyungBok
Publication year - 1997
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/(sici)1098-2760(199705)15:1<43::aid-mop13>3.0.co;2-9
Subject(s) - antisymmetric relation , power dividers and directional couplers , beam propagation method , microwave , nonlinear system , optics , beam (structure) , physics , refractive index , quantum mechanics , mathematical physics
We analyze symmetric and parallel nonlinear directional couplers with the finite‐difference beam‐propagation method. The results exhibit a cutoff phenomenon of an antisymmetric mode. We also investigate tapered nonlinear couplers for their possible applications to all‐optical logic gates. The numerical results show that tapered nonlinear couplers can provide an XOR (eXclusive OR) logic function. © 1997 John Wiley & Sons, Inc. Microwave Opt Technol Lett 15: 43–46, 1997.