Low loss, alignment tolerant coupling from a GaAs/AlGaAs QW laser to a single mode fiber
| Autor: | Vijayanand Vusirikala, C.E.C. Wood, Mario Dagenais, B. Gopalan, Dennis Stone, S. Kareenahalli |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Materials science
business.industry Single-mode optical fiber Cladding (fiber optics) Mole fraction Laser law.invention Gallium arsenide Transverse plane chemistry.chemical_compound Optics chemistry law otorhinolaryngologic diseases Optoelectronics sense organs business Gaas algaas Leakage (electronics) |
| Zdroj: | LEOS '95. IEEE Lasers and Electro-Optics Society 1995 Annual Meeting. 8th Annual Meeting. Conference Proceedings. |
| DOI: | 10.1109/leos.1995.484479 |
| Popis: | In this paper, we propose and demonstrate a simple GaAs-AlGaAs SQW laser employing conventional growth and processing techniques. In this laser, the transverse spot size has been increased by the use of a diluted waveguide (Al mole fractions are graded from 30% in the core to 31% in the cladding). This laser butt-couples into a cleaved single mode fiber with only -2.8 dB loss, and has a -3 dB excess loss misalignment tolerance of /spl plusmn/3.4 /spl mu/m in the lateral and /spl plusmn/1.6 /spl mu/m in the transverse directions. The laser showed a T/sub 0/ of 112 K, indicating that the leakage of carriers is not very significant. |
| Databáze: | OpenAIRE |
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