A scheme of multi-wavelength pulse generator using optical frequency comb and arrayed waveguide grating (AWG) is proposed and experimentally demonstrated. A flattop optical frequency comb is shaped into multiple narrowband Gaussian spectra by using an AWG which contains a number of Gaussian channels, and then multi-wavelength optical pulses are achieved. In the experiment, six wavelength pulses with full width at half-maximum (FWHM) of 14.6 ps at 10 GHz are obtained, and two wavelength-interleaved pulse trains at 20 GHz and four wavelength-interleaved pulse trains at 40 GHz are demonstrated by using the multi-wavelength optical pulses. This scheme has flexibility because the pulse width, the repetition rate, and time-interval can be readily controlled.
© 2012 Chinese Optics Letters
(060.5060) Fiber optics and optical communications : Phase modulation
(320.5540) Ultrafast optics : Pulse shaping
(320.5550) Ultrafast optics : Pulses
(060.5625) Fiber optics and optical communications : Radio frequency photonics
Yujie Dou, Hongming Zhang, and Minyu Yao, "Multi-wavelength pulse generation using flattop optical frequency comb and arrayed waveguide grating," Chin. Opt. Lett. 10, 123201-123201 (2012)