Low Chirp EMLs Fabricated By Combining SAG and Double Stack Active Layer Techniques

Quantum well intermixing (QWI) is an effective method for simple and well-defined monolithic integration of photonic devices. We introduce an identical-active electro-absorption modulated laser (IA-EML) with optimized QWI, which is applied to reduce the absorptive waveguide region. To determine the optimal intermixed IA-EML structure, we conduct a comparative analysis between the cases of an IA-EML with only an intermixed waveguide region and with both intermixed waveguide and electro-absorption modulator (EAM) regions, as well as the case without QWI. The results reveal that the intermixed region effectively inhibits the absorption in the waveguide. In particular, the IA-EML with only waveguide intermixing exhibits superior modulation characteristics with low driving voltages and a high extinction ratio. Our work provides an attractive approach for suppressing the absorptive waveguide region in the IA-EML to enhance modulation performance and to develop photonic integrated circuits with a simplified process.

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Low Chirp EMLs Fabricated By Combining SAG and Double Stack Active Layer Techniques

Cited by 5 publications

References 20 publications

High Speed Directly Modulated 1.3 μm InGaAlAs/InP MQW DFB Laser

High Speed Directly Modulated 1.3 μm InGaAlAs/InP MQW DFB Laser

Optimal Design of High-Speed Electro-Absorption Modulated Laser Based on Double Stack Active Layer Structure

1.3-µm identical active electro-absorption modulated laser with quantum well intermixed passive waveguide

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