Experimental studies on WDM to TDM signal conversions using gigahertz electro-absorption modulators

Tianxin Yang; Peirui Gao; Chunfeng Ge; Zhaoying Wang

doi:10.1117/12.2214219

21 March 2016 Experimental studies on WDM to TDM signal conversions using gigahertz electro-absorption modulators

Tianxin Yang, Peirui Gao, Chunfeng Ge, Zhaoying Wang

Proceedings Volume 9747, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications IX; 974720 (2016) https://doi.org/10.1117/12.2214219
Event: SPIE OPTO, 2016, San Francisco, California, United States

Abstract

A method of optical signal conversions at high data rates from wavelength division multiplexing (WDM) signals to time division multiplexing (TDM) signals is demonstrated and studied experimentally using the cross-absorption effect of electro-absorption modulator (EAM). A multi-wavelength light source is designed and built up as a set of WDM carriers which are gated as the WDM pulse signals to be converted. The spectrum of the WDM signals covers more than 40 nm so that is proved that the wavelengths in the whole C+L band can be converted to a single wavelength at which the TDM signal is formed at the output of the system. The pulse width of the WDM signals which is input into the EAM device is about 2.586 ns. And the signal to noise ratio after conversion is about 7dB. It shows that EAM has strong noise immunity in the all-optical wavelength conversion experiment. And it is observed that the conversion of signals at the short wavelength shows higher conversion efficiency than the long-wavelength signals in the EAM device to a probe wavelength at the center of C band.

Citation Download Citation

Tianxin Yang, Peirui Gao, Chunfeng Ge, and Zhaoying Wang "Experimental studies on WDM to TDM signal conversions using gigahertz electro-absorption modulators", Proc. SPIE 9747, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications IX, 974720 (21 March 2016); https://doi.org/10.1117/12.2214219

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KEYWORDS

Wavelength division multiplexing

Modulators

Time division multiplexing

Signal detection

Optical amplifiers

Signal attenuation

Modulation

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