Temperature-Insensitive 850-nm Dual-Mode-VCSEL With 25.1-GHz Bandwidth at 85 °C

• DOI: 10.1109/jlt.2023.3263040
• Publication Date: 2023-04-07T17:29:45Z
• Authors: Hao-Tien Cheng; Yun-Cheng Yang; Chao-Hsin Wu
• Keywords: Vertical-cavity surface-emitting laser; Operating temperature; Dual mode

The detuning between the spectral positions of gain peaks and cavity resonances greatly influences elevated temperature performances vertical-cavity surface-emitting lasers (VCSELs). Therefore, design optimization gain–cavity in VCSELs have long been piquing researchers' interest. This work presents an 850-nm dual-mode-VCSEL meticulously designed with qualified higher-temperature mind. Bringing enhanced functionalities over extended operating temperatures, delivering 3-dB bandwidths 27.5 GHz at 25 °C, 26.7 65 reaching a believed to be record-breaking 85 °C bandwidth 25.1 GHz. 2.4-GHz decline rise (25 °C) is considerably less impaired than prior studies. junction temperatures lifetimes different are extracted by fitting spectra microwave measurements. Lastly, we summarize discuss critical features possible future prospectives modern high-performance uncooled datacom temperature-insensitive performances.