Journal of the Optical Society of Korea

Optical Society of Korea (한국광학회)
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Optical Power Transfer of Grating - Assisted Directional Coupler with Three - Guiding Channels : TM modes Case

  • Ho, Kwang-Chun (Department of Information & Communications Engineering, Hansung University) ;
  • Ho, Kwang-Soo (Department of Mechanical Engineering, Keimyung University)
  • Received : 2004.01.14
  • Published : 2004.12.01
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Abstract

Newly developed modal transmission-line theory(MTLT) is used to analyze rigorously the optical power distribution in grating-assisted directional couplers(GADCs) with three guiding channels. By defining a novel coupling efficiency ${\eta}$ amenable to the rigorous analytical solutions of modal transmission-line theory, we explicitly evaluate the power coupling and distribution of TM modes. The results reveal that the incident power is sensitively partitioned through three output channels in terms of such grating parameters as the grating period, the duty cycle, and the operating wavelength.

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References

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