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Scientists investigate temperature effect on semiconductor optical amplifiers


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The effect of temperature on the performance of the semiconductor optical amplifiers (SOAs) is an important point of research. Amer Kotb and his colleagues at the Changchun Institute of Optics, Fine Mechanics and Physics of the Chinese Academy of Sciences investigated for the first time the effect of high temperatures on the performance of several SOAs, including conventional SOAs, carrier reservoir (CR) SOAs, reflective SOAs (RSOAs) and photonic crystal (PC) SOAs at different rates.

Related results were published in Magazine of Modern Optics

Despite the advantages of the conventional bulk SOA, it suffers from a slow dynamic response, which affects the performance at high speeds. Therefore, it was the task of Amer Kotb and his research team to find suitable alternatives.

Because of its inherently faster amplification and phase response, CR-SOA as an alternative technology approach overcomes the response limitation of standard SOA, allowing full optical logic operations to be performed at a higher data rate of up to 120 Gb/s.

RSOA, on the other hand, offers more advantages than a standard SOA due to its construction, such as higher optical gain and lower noise figure at low injection currents with energy-efficient operation.

In addition, including PCs in a standard SOA gives a faster dynamic response, making it suitable for ultra-fast, all-optical operations up to 160 Gb/s.

Accordingly, using the schemes proposed above, the researchers examined the performance of all-optical exclusive-OR (XOR) logic gates at high operating temperatures.

They solved the time-dependent differential equations for each amplifier and evaluated the performance of XOR operations at different operating temperatures. In addition, the influence of operating temperature on the main operating parameters of each amplifier was also discussed.

The results indicate that the alternatives to conventional bulk SOAs can operate at high temperatures and achieve acceptable performance that standard SOAs cannot.

New Scheme for Logical Operations at 1 Tb/s snelheid

More information:
Amer Kotb et al, Temperature response of all-optical XOR logic function based on various optical semiconductor amplifiers, Magazine of Modern Optics (2022). DOI: 10.1080/09500340.2022.2090630

Provided by the Chinese Academy of Sciences

Quote: Scientists examine temperature effect on optical semiconductor amplifiers (2022, July 1), retrieved July 2, 2022 from https://phys.org/news/2022-07-scientists-temperature-effect-semconductor-optical.html

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