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Ultrabroadband reflective semiconductor optical amplifier using superimposed quantum dots
Journal of Nanophotonics ( IF 1.5 ) Pub Date : 2021-09-01 , DOI: 10.1117/1.jnp.15.036009
Farshad Serat Nahaei 1 , Ali Rostami 1 , Samiye Matloub 2
Affiliation  

An approach has been suggested for the simulation of a quantum dot reflective semiconductor optical amplifier (RSOA) with wideband optical gain. This model is implemented by superimposing different quantum dot groups with various radii using solution process nanotechnology, which is both practical and frugal. Also, few works have been done, superimposing QD groups in RSOAs. A numerical method has been used for solving coupled rate equations. This method is a perfect approximation for understanding this device; because analytical solutions are not possible to further investigate the model. Using this method, a wideband optical gain of about 30 dB, covering broadband from 460 to 730 nm, has been obtained by using CdSxTe1 - x with different mole fractions. Furthermore, this optical gain is not even limited to this value if more groups get exploited. The proposed model results in about 270 nm optical bandwidth, making this device suitable for implementing wavelength division multiplexing in optical networks by designating different channels to various signals. In addition, it shows a high signal-to-noise ratio (about 1000), making it a great candidate for use in optical communications. Using this technique, one step is taken to the development of high-speed broadband WDM passive optical networks. Also, different bands in the lightwave spectrum can be used and only one needs to choose suitable materials for synthesizing QDs to operate in the desired wavelengths.

中文翻译:

使用叠加量子点的超宽带反射半导体光放大器

已经提出了一种模拟具有宽带光学增益的量子点反射半导体光放大器 (RSOA) 的方法。该模型通过使用溶液工艺纳米技术将不同半径的不同量子点组叠加来实现,既实用又省钱。此外,在 RSOA 中叠加 QD 群的工作很少。数值方法已用于求解耦合速率方程。这种方法是理解该设备的完美近似;因为解析解不可能进一步研究模型。使用这种方法,通过使用不同摩尔分数的 CdSxTe1-x 获得了大约 30 dB 的宽带光学增益,覆盖了从 460 到 730 nm 的宽带。此外,如果更多组被利用,该光学增益甚至不限于该值。所提出的模型产生大约 270 nm 的光带宽,通过为各种信号指定不同的信道,使该设备适合在光网络中实现波分复用。此外,它显示出高信噪比(约 1000),使其成为用于光通信的理想选择。使用这一技术,向高速宽带WDM无源光网络的发展迈进了一步。此外,可以使用光波光谱中的不同波段,只需选择合适的材料来合成 QD 即可在所需波长下工作。它显示出高信噪比(约 1000),使其成为用于光通信的理想选择。使用这一技术,向高速宽带WDM无源光网络的发展迈进了一步。此外,可以使用光波光谱中的不同波段,只需选择合适的材料来合成 QD 即可在所需波长下工作。它显示出高信噪比(约 1000),使其成为用于光通信的理想选择。使用这一技术,向高速宽带WDM无源光网络的发展迈进了一步。此外,可以使用光波光谱中的不同波段,只需选择合适的材料来合成 QD 即可在所需波长下工作。
更新日期:2021-09-12
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