19PK1200, Common InnoCity in Gwangju and Jeonnam, Open Lab construction Project,
Kang Hyun Seo
Abstract
Optical receiver modules play an important role in receiving signals from the Fiber Bragg Grating (FBG) sensors used for monitoring in civil structures, power facilities, and other sensing applications. When multiple sensors are used, more photo diodes receive optical signals; thin-film beam splitters with polarization characteristics are therefore used to reduce the size of the optical receiver module. Using a reflective semiconductor optical amplifier (R-SOA) with polarization characteristics in a sensing system with an FBG sensor, a structure that is less sensitive to polarization was developed by packaging a quad optical receiver module. A stabilization of 짹4.67% was achieved using the dual optical receiver module in polarization and of 짹1.20% with the quad optical receiver module in polarization.
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