Unified Criterion to Optimize Power Coupling at Optical GADCs with Discontinuity Interface(Regular Section)

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概要

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• We apply newly developed rigorous modal transmission-line theory (MTLT) to evaluate optimal design conditions on optical power coupling in grating-assisted directional couplers (GADCs) with two or three guiding channels. By defining a power distribution ratio (PDR) and coupling efficiency (CE) amenable to the rigorous analytical solutions of MTLT, we explicitly analyze the power coupling characteristics of TE modes propagating in GADCs. The numerical results reveal that the incident power is optimally coupled into the desired guiding channel if the powers of rigorous modes excited at the input boundary of grating-assisted coupler are equally partitioned.

• 社団法人電子情報通信学会の論文
• 2002-12-01

著者

• Kong Hyung-yun

  University Of Ulsan

• Ho Kwang-chun

  Hansung University

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