Rectangle variable optical filter using dynamic grating in erbium-doped fiber controlled by synthesis of optical coherence function: proposal and simulation

Bing Zhu; Takashi Saida; Kazuo Hotate

doi:10.1117/12.444947

19 October 2001 Rectangle variable optical filter using dynamic grating in erbium-doped fiber controlled by synthesis of optical coherence function: proposal and simulation

Bing Zhu, Takashi Saida, Kazuo Hotate

Author Affiliations +

Proceedings Volume 4580, Optoelectronics, Materials, and Devices for Communications; (2001) https://doi.org/10.1117/12.444947
Event: Asia-Pacific Optical and Wireless Communications Conference and Exhibit, 2001, Beijing, China

Abstract

A novel photonic functional device, a rectangle variable optical filter using dynamic grating in Er doped fiber (EDF) controlled by synthesis of optical coherence function, is proposed and analyzed. Due to the gain saturation of EDF, a periodic bleaching of the gain (dynamic grating) is generated, when an intensity standing wave is produced by interference of two laser beams traveling in EDF with opposite directions. When the frequency of the laser is modulated with an appropriate waveform, shape of the optical coherence function can be synthesized. It can be used to control the interferometric pattern in the EDF, and then the dynamic grating can also be controlled. Thus, the shape and bandwidth of the reflection spectrum of the dynamic grating becomes controllable. Simulations indicate that the spectrum of the filter can be controlled by synthesis of optical coherence function. Preliminary experiment confirmed the principle.

Citation Download Citation

Bing Zhu, Takashi Saida, and Kazuo Hotate "Rectangle variable optical filter using dynamic grating in erbium-doped fiber controlled by synthesis of optical coherence function: proposal and simulation", Proc. SPIE 4580, Optoelectronics, Materials, and Devices for Communications, (19 October 2001); https://doi.org/10.1117/12.444947

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