1x2 Multimode interference couplers based on semiconductor hollow waveguides formed from omnidirectional reflectors |
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| Authors: | Lo Shih-Shou Chen Chii-Chang |
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| Institution: | Department of Optics and Photonics, National Central University, 300, Jhong-Da Road Jhongli 320, Taiwan. |
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| Abstract: | A 1x2 hollow multimode interference (MMI) coupler based on semiconductor hollow waveguides formed from omnidirectional reflectors (SHOW-ODR) is demonstrated. The device has a shorter coupling length than a conventional silicon-on-insulator MMI coupler. A 2 dB uniformity was achieved at operating wavelengths between 1520 and 1562 nm. The device exhibited a weak polarization dependence in the TE and TM modes. |
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