A light source module of an optical apparatus is disclosed. The light source module includes a laser pump unit, a lens unit, and a fiber unit. The laser pump unit generates a laser source. The lens unit converts the laser source into a condensed beam. The fiber unit receives the condensed beam and emits a light signal. The light source module can achieve effects of low cost, large bandwidth, high resolution, and high stability with well-designed pump power of the laser pump unit, and length, doping material, and core size of the fiber unit.本發明揭露一種光學裝置之光源模組。光源模組包含一雷射泵浦單元、一透鏡單元及一光纖單元。雷射泵浦單元產生一雷射光源。透鏡單元將雷射光源轉換為一集中光束。光纖單元接收集中光束並發出一光訊號。光源模組藉由雷射泵浦單元之泵浦功率、光纖單元之長度、摻雜材質及纖心尺寸之適當設計，達到低成本、大頻寬、高解析及高穩定性之功效。
