Measurements of coupling and reflection characteristics of butt-joints in passive waveguide integrated laser diodes |
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| Authors: | Jung-Ho Song Jung-Woo Park Eun-Deok Sim Yongsoon Baek |
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| Affiliation: | Opt. Devices Dept., Electron. & Telecommun. Res. Inst., Daejon, South Korea; |
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| Abstract: | Amplified spontaneous emission (ASE) spectra of passive waveguide integrated lasers have been studied to estimate the coupling efficiency and the reflectivity at the butt-joints between active and passive waveguides. A new method has been proposed for the analysis of ASE to extract the coupling efficiency and reflectivity at the butt-joints. This method was applied experimentally to estimate the coupling and reflection of the passive waveguide integrated lasers with different amounts of vertical misalignments of active and passive waveguides. |
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