Tapered Multi-Section Superluminescent Diode with Tunable Spectral Asymmetry between Narrow and Wide Facet Outputs

2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) Pub Date : 2019-10-17 DOI:10.1109/cleoe-eqec.2019.8871859

A. Forrest, M. Krakowski, P. Bardella, M. Cataluna

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Abstract

Combining the output of two or more separate, distinct superluminescent diodes (SLDs) via spectral multiplexing has the potential to produce very wide optical spectra which could prove beneficial in imaging applications1. Likewise, the implementation of a multi-section contact layout also allows for optimization of the spectral bandwidth and output power through the independent tuning of the current density in each section2. Here, we present the first comparative investigation of the output from both facets of a tapered multi-section SLD. A significant spectral asymmetry between the output of both facets was observed and was found to be widely tunable through the variation of the biasing conditions in both sections of the device. These results highlight an as yet untapped extra degree of freedom in multi-section superluminescent diodes which could be exploited to engineer the spectral bandwidth of such devices through the multiplexing of both outputs of a single device.

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窄面和宽面输出之间具有可调谐光谱不对称的锥形多段超发光二极管

通过光谱复用将两个或多个独立的、不同的超发光二极管(sld)的输出组合在一起，有可能产生非常宽的光谱，这在成像应用中是有益的1。同样，多段触点布局的实现也允许通过独立调整每个部分中的电流密度来优化频谱带宽和输出功率2。在这里，我们提出了一个锥形多段SLD的两个方面的输出的第一个比较调查。观察到两个面输出之间的显著光谱不对称，并发现通过器件两个部分的偏倚条件的变化可广泛调谐。这些结果突出了多段超发光二极管尚未开发的额外自由度，可以通过单个器件的两个输出的多路复用来设计此类器件的频谱带宽。

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2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)

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