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7 January 2013 Optical temporal differentiator using a twin-core fiber
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Twin-core fiber (TCF) can provide the required spectral response for implementing an optical temporal differentiator. It is shown that the output temporal waveform from one core of the TCF providing full energy coupling is proportional to the first derivative of the optical temporal signal launched at the input. Moreover, TCF can also be used as the first order optical temporal differentiator for multiwavelength optical signals, in which the position and the number of central wavelength can be tunable simply by changing the fiber length. Our numerical results confirmed that the TCF has a good accuracy by calculating the first time derivatives of the input optical signals with temporal features in the picosecond and subpicosecond ranges.
© 2013 Society of Photo-Optical Instrumentation Engineers (SPIE) 0091-3286/2013/$25.00 © 2013 SPIE
Haidong You, Tigang Ning, Wei Jian, Li Pei, Xiaodong Wen, Jing Li, and Hongyao Chen "Optical temporal differentiator using a twin-core fiber," Optical Engineering 52(1), 015005 (7 January 2013).
Published: 7 January 2013

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