Theory and Experiment of Increasing the Extinction Ratio of the Cascaded Long Period Gratings Utilizing the Fiber Loop Mirror

[in Chinese]; [in Chinese]; [in Chinese]; [in Chinese]; [in Chinese]; [in Chinese]; [in Chinese]; [in Chinese]

Journals >Acta Photonica Sinica >Volume 34 >Issue 12 >Page 1788 > Article

Acta Photonica Sinica
Vol. 34, Issue 12, 1788 (2005)

Theory and Experiment of Increasing the Extinction Ratio of the Cascaded Long Period Gratings Utilizing the Fiber Loop Mirror

[in Chinese]^1、2, [in Chinese]¹, [in Chinese]¹, [in Chinese]¹, [in Chinese]¹, [in Chinese]¹, [in Chinese]¹, and [in Chinese]¹

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¹[in Chinese]

²[in Chinese]

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[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese]. Theory and Experiment of Increasing the Extinction Ratio of the Cascaded Long Period Gratings Utilizing the Fiber Loop Mirror[J]. Acta Photonica Sinica, 2005, 34(12): 1788 Copy Citation Text

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Abstract

The interferometric spectrum of the cascaded long period gratings (LPG) has been modulated, and it is presented that the extinction ratio can be doubled when a fiber loop mirror is connected at the end of the cascaded LPGs, which has been proved by the experiment. The fiber loop mirror is indeed an effective and simple way to increase the extinction ratio.

Keywords

Extinction ratio Fiber loop mirror Long period grating Cascaded

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