Abstract
The film mode matching method was used to analyze the inter waveguide coupling losses in a passive asymmetric twin waveguide caused by waveguide width and refractive index variation for both resonant and adiabatic coupling at a wavelength of 1,550 nm. The reasons for power losses are shown. It is demonstrated that tapering the mode beating section of the resonant coupler can increase the fabrication tolerance of resonant coupling without increasing the coupling length.
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References
Fimmwave/Fimmprop, Photon Design, http://www.photond.com
Galarza M., Mesel K.D., Baets R., Martinez A., Aramburu C., Lopez-Amo M.: Compact spot-size converters with fiber-matched antiresonant reflecting optical wave-guides. Appl. Optics 42, 4841–4846 (2003)
Huang Y., Xia F., Menon V.M., Forrest S.R., Gokhale M.: Reduction of absorption loss in asymmetric twin waveguide laser tapers using argon plasma enhanced quantum-well intermixing. IEEE Photon. Technol. Lett. 16, 2221–2223 (2004)
Shih M.H. et al.: Alignment-relaxed 1.55 m multiquantum well laser fabricated using standard buried heterostructure laser processes. Electron. Lett. 31, 1058–1060 (1995)
Studenkov P.V., Gokhale M.R., Dries J.C., Forrest S.R.: Monolithic integration of a quantum-well laser and an optical amplifier using an asymmetric twin-waveguide structure. IEEE Photon. Technol. Lett. 10, 1088–1090 (1998a)
Studenkov P.V., Gokhale M.R., Forrest S.R.: Efficient coupling in integrated twin waveguide tapers. IEEE Photon. Technol. Lett. 11, 1096–1098 (1998b)
Suematso Y., Yamada M., Hayashi K.: Integrated twin-guide alGaAs laser with multiheterostructure. IEEE J. Quantum Electron. QE- 11, 457–460 (1975)
Sudbo A.S.: Film mode matching: a versatile numerical method for vector mode field calculations in dielectric waveguides. Pure Appl. Opt. 2, 211–233 (1993)
Xia F., Menon V.M., Forrest S.R.: Photonic integration using asymmetric twin waveguide technology part I: concepts and theory. IEEE J. Sel. Topics Quantum Electron. 16, 17–29 (2005)
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Wieczorek, A., Roycroft, B., Peters, F.H. et al. Loss analysis and increasing of the fabrication tolerance of resonant coupling by tapering the mode beating section. Opt Quant Electron 42, 521–529 (2011). https://doi.org/10.1007/s11082-010-9426-7
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DOI: https://doi.org/10.1007/s11082-010-9426-7