Patent ID: 8902937
Filing Date: 2014-12-02
Classification: H01S

Abstract:
1. A compact external cavity tunable laser apparatus, comprising: a substrate; an external cavity tunable reflecting unit disposed on the substrate and that reflects a laser light being inputted from outside the external cavity tunable reflecting unit, the external cavity tunable reflecting unit selecting and varying a wavelength of the reflected laser light; an optical fiber that outputs the reflected laser light and being disposed on the substrate; and a highly integrated light source that has an inclined input waveguide, an inclined output waveguide, a curved waveguide, and a straight waveguide, the highly integrated light source receiving and integrating the reflected laser light, that is input from the external cavity tunable reflecting unit, using the input, the output, the curved and the straight waveguides, to match an optical axis of the external cavity tunable reflecting unit with an optical axis of the optical fiber, thereby to output the integrated laser light to the optical fiber, the curved waveguide having first and second ends, the first and second ends facing in a same direction.