Research of inscription technique for multi-wavelength array fiber gratings in ribbon fiber
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1.
Department of Optoelectronics Engineering, School of Information Science and Engineering, Yanshan University, Qinhuangdao 066004, China;
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2.
The Key Laboratory for Special Fiber and Fiber Sensor of Hebei Province, Qinhuangdao 066004, China
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Received Date:
2014-07-21
Accepted Date:
2014-08-14
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Abstract
In order to inscribe multi-wavelength array fiber gratings in ribbon fiber including 8 fibers at the same time, ribbon fiber was fixed by a specifically designed fixture and tension was added to the whole ribbon fiber by a programmed control displacement platform. 8 fibers in the ribbon fiber were exposed with phase mask technique one by one and Hamming apodization was realized simultaneously by using scan inscription method. Only with one phase mask, multi-wavelength array fiber gratings in the ribbon fiber including 8 fibers was achieved. The inscription process was controlled by the computer program. The central wavelength, the interval of wavelength and the style of apodization were adjusted freely. The test results of array Bragg fiber grating show that 3dB bandwidth is 0.2nm, wavelength interval is about 0.5nm, deviation is within 50pm, and reflectivity can reach 80%~85%. Inscription technique for ribbon multi-wavelength array fiber gratings is entirely feasible.
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