An InGaAs/InGaAsP multiquantum well superluminescent diode (SLD) emitting at l·5 μ m has been studied. Broad spectral widths exceeding 100 nm are achieved under a wide injection current range. The maximum spectral width is 170nm, which gives a calculated coherence length of 13 μ m, approximately one third that of 1·5 μ m conventionally available bulk SLDs.
- Luminescent devices
- Semiconductor devices and materials