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- [3] Wavelength-Flattened Asymmetric Directional Couplers Written by Focused Femtosecond Laser 2008 CONFERENCE ON LASERS AND ELECTRO-OPTICS & QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE, VOLS 1-9, 2008, : 1419 - +
- [9] 3-D Compact 3-dB Branch-Line Directional Couplers Based on Through-Silicon Via Technology for Millimeter-Wave Applications IEEE TRANSACTIONS ON COMPONENTS PACKAGING AND MANUFACTURING TECHNOLOGY, 2019, 9 (09): : 1855 - 1862