| Autor: |
Zuhaib Khan, Nikolay Ledentsov, Lukasz Chorchos, Jie-Chen Shih, Yung-Hao Chang, Nikolay N. Ledentsov, Jin-Wei Shi |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Předmět: |
|
| Zdroj: |
IEEE Access, Vol 8, Pp 72095-72101 (2020) |
| Druh dokumentu: |
article |
| ISSN: |
2169-3536 |
| DOI: |
10.1109/ACCESS.2020.2987818 |
| Popis: |
Using the Zn-diffusion and oxide-relief techniques with the optimized aperture sizes, we demonstrate a novel single-mode 940 nm vertical-cavity surface-emitting laser (VCSEL) with high brightness performance. The highly single-mode (SM) output optical spectra (SMSR>50 dB) can be sustained under a full range of bias currents and from room temperature (RT) to 85°C operation. Under RT operation, the maximum SM power can be as high as 7.1 mW with a moderate threshold current ($\text{I}_{\mathrm {th}}$ : 1.1mA) and narrow divergence angles in the far-field pattern (FWHM: 5°, 1/e2: 7-8°). Furthermore, the maximum 3-dB E-O modulation bandwidth of this high-power SM VCSEL can reach 15 GHz without the low-frequency roll-off induced by spatial hole burning effect. By using this novel device as the transmitter, we can achieve 25 Gbit/sec error-free (bit-error-ratio (BER) $ 0.3 km) data communications as well as in free-space optical communication. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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