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Ridge Waveguide Laser Integrated with Spot-Size Converter in a Single Step Epitaxial for High Coupling Efficiency to Single-Mode Fibres |
| HOU Lian-Ping;WANG Wei;ZHU Hong-Liang |
| National Research Centre for Optoelectronic Technology, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083 |
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| Cite this article: |
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HOU Lian-Ping, WANG Wei, ZHU Hong-Liang 2005 Chin. Phys. Lett. 22 114-116 |
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Abstract A 1.55-μm laser diode integrated with a spot-size converter was fabricated in a single step epitaxial by using the conventional photolithography and chemical wet etching process. The device was constructed by a conventional ridge waveguide active layer and a larger passive ridge-waveguide layer. The threshold current was 40mA together with high slope efficiency of 0.24W/A. The beam divergence angles in the horizontal and vertical directions were as small as 12.0°× 15.0°, respectively, resulting in about 3.2-dB coupling losses with a cleaved optical fibre.
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| Keywords:
42.55.Px
42.70.Hj
42.60.Jf
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Published: 01 January 2005
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| PACS: |
42.55.Px
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(Semiconductor lasers; laser diodes)
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42.70.Hj
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(Laser materials)
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42.60.Jf
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(Beam characteristics: profile, intensity, and power; spatial pattern formation)
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