Study of extra wide coherent optical combs generated by a QW-based integrated passively mode-locked ring laser

Article

Moskalenko, V., Koelemeij, J., Williams, K.A. & Bente, E.A.J.M. (2017). Study of extra wide coherent optical combs generated by a QW-based integrated passively mode-locked ring laser. Optics Letters, 42(7), 1428-1431. In Scopus Cited 1 times.

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Abstract

 

We present an investigation of an InP quantum-well-based integrated extended cavity passively mode-locked laser which shows extra broad frequency comb generation. The ring laser was characterized in frequency and time domains for a range of the current levels injected in the semiconductor optical amplifier. The study showed an increase of the bandwidth to over 40 nm at the −20  dB
−20  dB
level. The coherence between the longitudinal modes in the wide comb is demonstrated by the characterization of a spectrally filtered signal in time and RF domains. The relative time delay across the optical comb was measured.