Distributed feedback fiber laser with multi-tunable wavelength
A fiber laser and distributed feedback technology, applied in the field of lasers, can solve the problem of slow wavelength adjustment in a large range, and achieve the effects of fast and large-scale wavelength adjustment, expanding the wavelength tuning range, and large-scale high-speed wavelength tuning
Active Publication Date: 2020-05-01
LASER RES INST OF SHANDONG ACAD OF SCI
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Problems solved by technology
There is still the problem of slow adjustment speed for a wide range of wavelengths
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[0036] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0037] refer to figure 1 , a distributed feedback fiber laser with multi-tunable wavelengths provided by the present invention, including: base structure 01, mechanical tuning structure 02, piezoelectric ceramics 03, temperature control sheet 04, heat sink 05, heat insulation shell 06, optical fiber Laser 07.
[0038] Such as figure 1 As shown, the base structure 01 of a distributed feedback fiber laser with multi-tunable wavelength provided by the present invention is preferably made of annealed stainless steel plate material through wire cutting or laser cutting, or made of ceramic material by precision machining It is a long strip structure with an arc surface at the upper end, and an inner groove 014 at one end, and...
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The invention relates to a laser, and particularly discloses a distributed feedback fiber laser with wavelength capable of being tuned for many times. The distributed feedback fiber laser comprises asubstrate structure, wherein an arc surface is arranged at an upper end of the substrate structure, the distributed feedback fiber laser is characterized in that a groove is formed in an axis of the arc surface of the substrate structure, an inner groove is formed in one end of the substrate structure, a vertical rigid beam is hinged and connected with a lower end part of the inner groove, a mechanical tuning structure and piezoelectric ceramic are sequentially arranged in the inner groove from inside to outside, a temperature control sheet and a cooling fin are sequentially pasted to the bottom of the substrate structure, the substrate structure is placed in a thermal isolation shell, and a fiber laser is arranged in the groove in the arc surface of the substrate structure. By the distributed feedback fiber laser, the wavelength tuning range is effectively expanded, particularly, a mechanical structure is used for tuning, and the wavelength can be rapidly adjusted within a large range; and by effective combination of temperature tuning, mechanical structure turning and piezoelectric ceramic tuning, accurate wavelength control under a large-wavelength tuning range can be achieved.
Description
[0001] (1) Technical field [0002] The invention relates to a laser, in particular to a distributed feedback fiber laser with multi-tunable wavelength. [0003] (2) Background technology [0004] Distributed feedback fiber laser is an emerging active fiber device in recent years. Using doped photosensitive fiber, through ultraviolet exposure and other technologies, phase-shifted fiber grating is directly written in the doped area of the fiber, and optical feedback and wavelength selection are performed through the phase-shifted grating. , to generate laser with narrow linewidth, which has the advantages of single longitudinal mode output, narrow linewidth, low noise, strong coherence, small size, simple structure, strong controllability and good output spectrum characteristics. It is used in optical fiber communication, optical fiber sensing, It is widely used in national defense, medical treatment, ranging and other fields. [0005] The output wavelength of distributed fee...
Claims
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IPC IPC(8): H01S3/106H01S3/067H01S3/042
CPCH01S3/042H01S3/067H01S3/1067
Inventor 张发祥祁海峰姜劭栋宋志强王伟涛倪家升王昌
Owner LASER RES INST OF SHANDONG ACAD OF SCI