External cavity multiwavelength superbroadband diode laser
نویسندگان
چکیده
Multiwavelength semiconductor laser source for dense wavelength division multiplexing (DWDM) applications based on a novel dispersive cavity is described. Multiline lasing on the basis of a single-diode laser chip and multi-stripe diode laser is analyzed theoretically and demonstrated experimentally. Simultaneous lasing across 80% of the FWHM of the luminescence bandwidth of the AlGaAs active medium (657–667 nm) in multiline regime with a special preassigned spectral composition was realized. For DWDM applications a prototype of this superbroadband semiconductor laser operating in one of the telecommunication wavelength bands around 1.5 lm has been designed on the basis of a multi-stripe diode chip. Simultaneous lasing of four spectral lines in the region 1567–1577 nm has been obtained. 2003 Elsevier Science B.V. All rights reserved. PACS: 42.55.Px; 42.60.Da; 84.40.Ua; 41.85.Ct
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