| 摘要 |
PURPOSE: A light source of a tunable laser is provided to form the oscillation wavelength of stable laser regardless of temperature, driving current, and external environment by using an optical fiber. CONSTITUTION: A light source of a tunable laser is formed with an optical fiber(100) and a semiconductor device(200). The optical fiber is used for forming a multiple-reflection peak. A nonreflective coating layer(32) is formed on one side of the semiconductor device. The semiconductor device includes a mode size converter region(20), a gain region(30), and a Bragg mirror region(40) in order to vary oscillation wavelength of laser. The optical fiber and the semiconductor device are coupled to each other by an optical coupling method. The oscillation wavelength of laser is determined according to the multiple-reflection peak of the optical fiber.
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