A novel Si four-wavelength multiplexer for 100/400GbE using higher-order mode composed of (a)symmetric directional couplers and TE-TM mode converter.

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ID: 86733
2019
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Abstract
A novel Si four-wavelength multiplexer (MUX) for 100/400GbE composed of (a)symmetric directional couplers and a rib-waveguide TE-TM mode converter is proposed and experimentally demonstrated. Two-lane signals are multiplexed as TE modes via symmetric directional coupler (DC) and other two-lane signals are multiplexed as TE modes via asymmetric directional couplers (ADCs). Finally, TE modes are converted to TM modes and the device acts as a 4-lane MUX. The proposed device is fabrication-tolerant due to the removal of the 1600-GHz filter used in conventional two-stage Mach-Zehnder MUXs, and the insertion loss is smaller than those of previously reported Si-based MUXs.
Reference Key
fujisawa2019aoptics Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Fujisawa, Takeshi;Takano, Junya;Sawada, Yusuke;Sakamoto, Taiji;Matsui, Takashi;Nakajima, Kazuhide;Saitoh, Kunimasa;
Journal Optics express
Year 2019
DOI
10.1364/OE.27.036286
URL
Keywords
spectroscopy biomedical sensor control setup mode competition optical design

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