External cavity tunable laser and wavelength tuning method
作者： Zhang Chenwei , Ban Dechao , Chen Wei , Zhu Ninghua
DOI:
关键词: Reflector (antenna) 、 Phase modulation 、 Optical axis 、 Laser 、 Tunable laser 、 Lens (optics) 、 Blazed grating 、 Optics 、 Materials science 、 Grating
摘要: The invention provides an external cavity tunable laser and a wavelength tuning method, belongs to the technical field of lasers. comprises semiconductor gain chip, first collimating lens, blazed grating reflector opposite grating, wherein lens are located on same optical axis, included angle larger than 0 exists between plane axis. chip sequentially sampling region, phase modulation electrode, second electrode third which respectively cover regionand region from left right. fixed electric or manual control mechanical structure. According invention, large-range, rapid fine by is realized, output can be narrowed.
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