7 January 2013 Optical temporal differentiator using a twin-core fiber
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Optical Engineering, 52(1), 015005 (2013). doi:10.1117/1.OE.52.1.015005
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)
Haidong You, Tigang Ning, Wei Jian, Li Pei, Xiaodong Wen, Jing Li, Hongyao Chen, "Optical temporal differentiator using a twin-core fiber," Optical Engineering 52(1), 015005 (7 January 2013). http://dx.doi.org/10.1117/1.OE.52.1.015005

Signal processing

Fiber Bragg gratings

Refractive index

Energy coupling

Picosecond phenomena

Geometrical optics

Optical engineering

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