Mode-Locked Lasers (MLL)

At a Glance

  • High performance buried heterostructure InAs/InP QD and InGaAsP/InP QW mode-locked lasers as comb and pulse sources

Features

  • Wavelengths in O-, C-, L-Band
  • > 33 channels > -3 dBm in the DWDM 50 GHz grid
  • Combined laser modes RIN values of < -145 dB/Hz
  • Individual mode RIN values of ≈ -130 dB/Hz
  • < 500 fs pulses by using a simple SMF
  • fully customizable

Applications

  • Multiwavelength modulators in short reach transmission
  • Phase controlled OFDM channels in long reach
  • Pulse source with < 500 fs pulses

Device Variants

  • Standard chip size 425 μm x 840 μm (for 50 GHz mode spacing)
  • InAs/InP QDs or InGaAsP/InP QWs as active layers
  • Optional:
    • Etched facets
    • Integrated heater stripe parallel for wavelength fine tuning of comb modes

Typical Performance

  • Comb spectra with > 33 lines > -3 dBm
  • Slope efficiency of ≈ 0.33 W/A
  • Repetition frequency - 3 dB linewidths down to 60 and 140 kHz for QW and QD devices, respectively
  • Individual mode optical linewidth of ≈ 0.6 and 14 MHz for QW and QD devices, respectively