Optical fiber code recognition system and method of temperature modulation multispectral matrix
A code identification and multi-spectral technology, applied in the direction of optical multiplexing system, transmission system, wavelength division multiplexing system, etc., can solve the problems of large bandwidth, insufficient recognition accuracy, long single acquisition time of wavelength detector, etc.
Pending Publication Date: 2021-04-23
ZHONGSHAN SHUIMU GUANGHUA ELECTRONICS INFORMATION TECH CO LTD
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Problems solved by technology
The existing optical fiber code recognition system mainly uses a wavelength detector (AD acquisition card) for a long time for single acquisition, and the main light wave used is a non-communication wavelength. The central wavelength light wave bandwidth emitted by a single laser is too large, resulting in insufficient recognition accuracy
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[0025] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0026] In the description of the present invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc. indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only In order to facilitate the description of the present invention and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific ...
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The invention discloses an optical fiber code recognition system and method for a temperature modulation multispectral matrix, and the system comprises a tunable laser module group which consists of a plurality of tunable laser modules with different wavelength segments, wherein each tunable laser module comprises a light-emitting chip and a temperature modulation device; a wavelength division multiplexer; a circulator; an optical fiber which is provided with an optical fiber code; an APD photoelectric collector; an AD acquisition card; and a master controller. According to the embodiment, the tunable laser modules emit light one by one in a polling mode, the APD photoelectric collector and the AD collection card are matched, the collection frequency is more than 40 times that of a traditional wavelength detector, reflection signal collection of a light source with a single center wavelength in the whole optical fiber link process can be completed at a time, and faster recognition of optical fiber codes is achieved under the condition of lower cost. A temperature modulation device is combined to act on a light-emitting chip to realize multiple changes of the central wavelength of a single light source, and the optical fiber code recognition precision is improved.
Description
technical field [0001] The invention relates to the field of optical fiber communication, in particular to an optical fiber code recognition system and method for temperature modulation multispectral matrix. Background technique [0002] In the field of optical fiber communication, optical fiber encoding, as a unique technical means for identifying optical fiber media, is composed of multiple fiber gratings with different wavelengths. The optical fiber encoding identification system is an optical detection system that accurately identifies the wavelength of its optical fiber grating. The existing optical fiber code recognition system mainly uses a wavelength detector (AD acquisition card) for a long time for a single acquisition, and the main light wave used is a non-communication wavelength. The central wavelength light wave bandwidth emitted by a single laser is too large, resulting in insufficient recognition accuracy. Contents of the invention [0003] The present inve...
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IPC IPC(8): H04B10/071H04B10/50H04B10/516H04B10/572H04J14/02
CPCH04B10/071H04B10/503H04B10/516H04B10/572H04J14/0202
Inventor 朱惠君薛鹏白金刚毛志松邬耀华
Owner ZHONGSHAN SHUIMU GUANGHUA ELECTRONICS INFORMATION TECH CO LTD