在本論文中,在浸水監測所提出的光纖感測器,其具有鎖定和非鎖定型,是基於彎曲損耗機制。為了實現簡單,低成本和易於使用的結構,我們採用浮球式水位感測器的改良結構。所提出的感測器是非常適用於實現於準分佈式感測網路。 本設計的感測器都具有鑑別度超過3分貝以提供浸水監測,並具有穩定的鎖定特性。 In this thesis, the proposed fiber-optic sensors for water immersion monitoring, which have the latch and non-latch types, are based on bending loss mechanism. To achieve simple, low-cost and easy-to-use structures, we adopt the improved structures of float-type water level sensor. The proposed sensors are very suitable for implementing in quasi-distributed sensing networks. The designed sensors all have the discrimination over 3 dB for offering water immersion monitoring and have the stable latching property.