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Etching device and etching method for any apodised fiber bragg grating

A technology of optical fiber grating and writing device, which is applied in the direction of photolithography exposure device, diffraction grating, microlithography exposure equipment, etc., can solve the problems of non-universality, achieve good repeatability and flexibility, and simple structure , easy-to-achieve effects

Active Publication Date: 2012-08-01
南京聚科光电技术有限公司
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Problems solved by technology

[0006] It can be seen that the above three methods for making apodized fiber gratings are all restricted by the specific form of the apodization function, and can only make a single type of apodized fiber gratings, which is not universal

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  • Etching device and etching method for any apodised fiber bragg grating
  • Etching device and etching method for any apodised fiber bragg grating
  • Etching device and etching method for any apodised fiber bragg grating

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with embodiment, but should not limit protection scope of the present invention with this.

[0035] figure 1 It is a structural block diagram of an arbitrary apodized fiber grating writing device of the present invention. Also a block diagram of an embodiment of the apparatus. As can be seen from the figure, the arbitrary apodized fiber grating writing device of the present invention is characterized in that its composition includes:

[0036] Laser 1, a rectangular aperture 2 is placed at the output end of the laser 1, a programmable spatial light modulator 3, a cylindrical mirror 5, and a phase mask fixture are placed in sequence behind the rectangular aperture, and the phase mask 6 is fixed on the In the draw-in slot of the phase mask clamp and keep it horizontal, 2 sets of optical fiber clamps are arranged behind the phase mask 6, and the phase mask clamp and 2 sets of optical fiber clamps are res...

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Abstract

The invention provides an etching device and an etching method for any apodised fiber bragg grating. The device comprises a laser, a rectangular aperture, a programmable spatial light modulator, a function generator, a cylindrical lens, phase mask fixtures and three-dimensional adjusting racks. The device has the advantages of simple structure, economy, practicality, high repeatability and high flexibility and is easy to realize; and the limitations in a traditional apodised fiber bragg grating manufacturing process that a high coherent light source needs to be used or two conjugated amplitude templates need to be processed, and only a single apodised fiber bragg grating can be manufactured are overcome.

Description

technical field [0001] The invention relates to an optical fiber grating, in particular to a writing device and method for an arbitrary apodized optical fiber grating. Background technique [0002] With the wide application of fiber gratings in the field of optical communication, people put forward higher requirements for the performance of fiber gratings, and the apodization technology was born under this background. Apodized fiber gratings can greatly reduce the side lobes in the grating reflection spectrum, suppress the delay oscillation caused by signal transmission in optical communication, reduce the symbol crosstalk between adjacent channels, and play a good role in dispersion compensation. Therefore, apodization technology is a key technology to determine the performance of fiber gratings. At present, the most commonly used methods for fabricating apodized fiber gratings mainly include ultraviolet pulse coherent writing method, apodized phase mask method and conjuga...

Claims

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Application Information

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IPC IPC(8): G02B5/18G03F7/20
Inventor 刘刚张鑫杨飞叶青蔡海文方祖捷
Owner 南京聚科光电技术有限公司
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