Abstract
The GaAs-on-InP heteroepitaxial waveguides are demonstrated for the first time using molecular beam epitaxy. A propagation loss of 9.3 dB/cm was obtained for waveguides grown on a 3° off (100) InP substrate. Compared to the 16 dB/cm loss for waveguides on (100) InP substrates, the waveguides on misoriented InP substrates exhibited a significantly lower loss. Based on photoluminescence studies, we attribute the propagation loss in both samples mainly to optical absorption by crystal defects. Defect densities of 4×1017 cm-3 and 2×1017 cm-3 are estimated for material on (100) and 3 ° off (100) substrates, respectively. Such heteroepitaxial waveguides may have applications in long-wavelength photonic integrated circuits.
Original language | English (US) |
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Pages (from-to) | 1242-1244 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 53 |
Issue number | 14 |
DOIs | |
State | Published - 1988 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)