Abstract: An arrayed waveguide grating based hybrid integrated laser has an adjustable external cavity. The waveguide includes a semiconductor gain die and an optical waveguide chip. The optical waveguide chip includes an arrayed waveguide grating and an arrayed waveguide reflection-controllable component. A resonant cavity is formed by the output end reflection-controllable arrayed waveguide grating chip and the semiconductor gain die. An output wavelength of the laser can be adjusted by changing a driving condition of the reflection-controllable component. The output wavelength is determined by a center wavelength of each channel of the arrayed waveguide grating.

Abstract: Device and method are provided to align and bond a lens array to a PD array with high precision, which can implement aligning and bonding of the lens array automatically. A telescopic rod of the stepping actuator is adjusted until photosensitive areas of the PD array form a clear image on the image acquisition CCD through the lens array, an adjusted distance h1 of the telescopic rod is recorded, and a position coordinate (xn, yn) of center of each circular photosensitive area in the image may be obtained, and a slope k1 of a line connecting the centers of the photosensitive areas is calculated. The telescopic rod is adjusted again, and a slope k2 of a line connecting the centers of the apertures of the lens array is calculated. Based on calculated values ?xn, ?yn, arctan(k1)?arctan(k2), the high-resolution adjustment stage is adjusted to adjust position of the lens array.

Abstract: Device and method are provided to align and bond a lens array to a PD array with high precision, which can implement aligning and bonding of the lens array automatically. A telescopic rod of the stepping actuator is adjusted until photosensitive areas of the PD array form a clear image on the image acquisition CCD through the lens array, an adjusted distance h1 of the telescopic rod is recorded, and a position coordinate (xn, yn) of center of each circular photosensitive area in the image may be obtained, and a slope k1 of a line connecting the centers of the photosensitive areas is calculated. The telescopic rod is adjusted again, and a slope k2 of a line connecting the centers of the apertures of the lens array is calculated. Based on calculated values ?xn, ?yn, arctan(k1)-arctan(k2), the high-resolution adjustment stage is adjusted to adjust position of the lens array.

Abstract: A coupling device of an optical waveguide chip and a PD array lens. The coupling device comprises a waveguide chip, a PD array, a heat sink, a waveguide gasket and a substrate. The waveguide gasket and the heat sink are located on the substrate, the PD array is located on the heat sink, and the waveguide chip is provided on the waveguide gasket. A reflection prism is provided in an optical path between the waveguide chip and the PD array. The output light of the waveguide chip is reflected by the reflection prism, and then is received by the PD array. A lens array having a convergence effect is provided in the optical path between the waveguide chip and the PD array. The coupling device can reduce costs and has a simple structure, the assembly process thereof is easy to realize, and the photoelectric conversion efficiency thereof is high.