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Compact triangular resonator without direct coupling between two access waveguides

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13 Author(s)
Kim, D.G. ; Sch. of Electr. & Electron. Eng., Chung-Ang Univ., Seoul ; Oh, G.Y. ; Choi, W.K. ; Kim, H.J.
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Novel triangular resonators containing active and passive sections have been fabricated and characterised with various multimode-interference (MMI) lengths. The optimum MMI length and width turn out to be 108 and 9 mum, respectively. A free spectral range of approximately 228 GHz is observed near 1558 nm along with an on off ratio of 9 dB. The proposed triangular resonator has the advantage of removing the direct coupling between the two access waveguides of the MMI coupler.

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Electronics Letters  (Volume:44 ,  Issue: 20 )