[HTML][HTML] Extended-bandwidth frequency sweeps of a distributed feedback laser using combined injection current and temperature modulation
This article details the generation of an extended-bandwidth frequency sweep using a
single, communication grade distributed feedback (DFB) laser. The frequency sweep is
generated using a two-step technique. In the first step, injection current modulation is
employed as a means of varying the output frequency of a DFB laser over a bandwidth of
99.26 GHz. A digital optical phase lock loop is used to lock the frequency sweep speed
during current modulation, resulting in a linear frequency chirp. In the second step, the …
single, communication grade distributed feedback (DFB) laser. The frequency sweep is
generated using a two-step technique. In the first step, injection current modulation is
employed as a means of varying the output frequency of a DFB laser over a bandwidth of
99.26 GHz. A digital optical phase lock loop is used to lock the frequency sweep speed
during current modulation, resulting in a linear frequency chirp. In the second step, the …
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