Ring resonator with multimode waveguide turning-mirror couplers in InGaAsP-InP |
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| Authors: | CL Chiu TS Lay |
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| Institution: | Institute of Electro-Optical Engineering and Department of Photonics, National Sun Yat-Sen University, No. 70, Lienhai Road, Kaohsiung 804, Taiwan |
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| Abstract: | Compact In0.67Ga0.33As0.6P0.4/In0.71Ga0.29As0.74P0.26 on InP single ring resonators incorporating 2 × 2 multimode interference (MMI) turning-mirror couplers with cross coupling factor of 0.15 have been demonstrated. The form of race tracks is a 15-degree arc of 260 μm radius joined with a 60-degree arc of 110 μm radius, and finished with another 15-degree arc of 260 μm radius. The MMI turning-mirror coupler of 128 μm in length is used in the single ring resonators, which correspond to free spectral ranges of 82 GHz. A contrast of 4 dB, a finesse of nearly 3 and full-width at half-maximum (FWHM) of 0.24 nm for the drop port have been achieved in this single ring resonator. From the experimental value Tmax/Tmin of 21 dB, the experiment coupling factor coincides with the simulation. |
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| Keywords: | Integrated optics devices Wavelength filtering devices Optical resonators Semiconductor optical amplifiers Optical switching devices Semiconductors Resonator |
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