J. Semicond. > 2008, Volume 29 > Issue 1 > 55-62

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A High-Efficiency Fiber-to-Waveguide Coupler with Low Polarization Dependence Using a Diluted Waveguide in InP Substrate with a 1.55μm Wavelength

Zhang Yun, Zuo Yuhua, Guo Jianchuan, Ding Wuchang, Cheng Buwen, Yu Jinzhong and Wang Qiming

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Abstract: We propose a fiber-to-waveguide coupler for side-illuminated p-i-n photodiodes to obtain high responsivity and low polarization dependence that is grown on InP substrate and is suitable for surface hybrid integration in low cost modules.The fiber-to-waveguide coupler is based on a diluted waveguide,which is composed of ten periods of undoped 120nm InP /80nm InGaAsP (1.05μm bandgap) multiple layers.Using the semi-vectorial three dimensional beam propagation method (BPM) with the central difference scheme,the coupling efficiency of fiber-to-waveguide under different conditions is simulated and studied,and the optimized conditions for fiber-to-waveguide coupling are obtained.For TE-like and TM-like modes,the calculated maximum coupling efficiency is higher than 94% and 92%,respectively.The calculated polarization dependence is less than 0.1dB,showing good polarization independence.

Key words: diluted waveguideBPMfiber-to-waveguidewaveguide photodiode

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    Received: 18 August 2015 Revised: 21 August 2007 Online: Published: 01 January 2008

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      Zhang Yun, Zuo Yuhua, Guo Jianchuan, Ding Wuchang, Cheng Buwen, Yu Jinzhong, Wang Qiming. A High-Efficiency Fiber-to-Waveguide Coupler with Low Polarization Dependence Using a Diluted Waveguide in InP Substrate with a 1.55μm Wavelength[J]. Journal of Semiconductors, 2008, In Press. Zhang Y, Zuo Y H, Guo J C, Ding W C, Cheng B W, Yu J Z, Wang Q M. A High-Efficiency Fiber-to-Waveguide Coupler with Low Polarization Dependence Using a Diluted Waveguide in InP Substrate with a 1.55μm Wavelength[J]. J. Semicond., 2008, 29(1): 55.Export: BibTex EndNote
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      Zhang Yun, Zuo Yuhua, Guo Jianchuan, Ding Wuchang, Cheng Buwen, Yu Jinzhong, Wang Qiming. A High-Efficiency Fiber-to-Waveguide Coupler with Low Polarization Dependence Using a Diluted Waveguide in InP Substrate with a 1.55μm Wavelength[J]. Journal of Semiconductors, 2008, In Press.

      Zhang Y, Zuo Y H, Guo J C, Ding W C, Cheng B W, Yu J Z, Wang Q M. A High-Efficiency Fiber-to-Waveguide Coupler with Low Polarization Dependence Using a Diluted Waveguide in InP Substrate with a 1.55μm Wavelength[J]. J. Semicond., 2008, 29(1): 55.
      Export: BibTex EndNote

      A High-Efficiency Fiber-to-Waveguide Coupler with Low Polarization Dependence Using a Diluted Waveguide in InP Substrate with a 1.55μm Wavelength

      • Received Date: 2015-08-18
      • Accepted Date: 2007-07-09
      • Revised Date: 2007-08-21
      • Published Date: 2007-12-26

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