| Summary: | 碩士 === 國立臺北科技大學 === 光電技術研究所 === 90 === The passive devices of arrayed waveguide grating (AWG) are the most potential and developmental devices in wavelength division multiplexing (WDM). This paper is focus on designing AWG in optical fiber communication and building a basic design of 8×8 channels、200GHz AWG which have good performance. Adding taper structure in AWG I/O waveguide of free propagation range (FPR), the spectrum response becomes flat and the error of wavelength shift which is influenced by temperature and polarization is tolerated, the crosstalk of adjunct channels is —30dB, insertion loss is 3dB. As the width of taper is increased by 1μm, the width of spectrum response is also increased by 0.065nm. The propagation effectiveness of taper structure can be a standard of fabrication and cost. Finally, the performance of AWG will be better than classical one by using both multimode interference (MMI) and taper structure of AWG, the crosstalk of adjunct channels is —35dB, insertion loss is 1.2dB.
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