All-optical buffer and shaper based on complex-modulated long-period-grating coupler and self-closed fiber loop

Abstract

We propose a novel all-optical buffer and shaper based on the adjustable power transferring characteristics of the complex-modulated long-period-grating coupler (CM-LPGC) and the multiple circulations of the self-closed fiber loop. By turning on the external optical pumps, the signals can be stored by utilizing the nonreciprocal power transferring of the CM-LPGC. When the buffer time is satisfied, the signals can be extracted discretionarily by turning off the external optical pumps. In addition, by controlling the spectral bandwidth of the CM-LPGC, the temporal rectangular pulse can be obtained by reshaping the Gaussian input signal.

Keywords

Optical Pump / Coupling Length / Buffer Time / Refractive Index Modulation / IEEE Photonic Technology Letter

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