Compact digitally tunable laser

We present a new design for a digitally tunable laser using two waveguide grating routers with different free spectral range. For an N-channel device, both the number of required amplifiers and the number of required grating arms scale as the square root of N, resulting in a more compact device than...

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Bibliographic Details
Published in:IEEE photonics technology letters 2003-02, Vol.15 (2), p.182-184
Main Authors: Van Thourhout, D., Zhang, L., Yang, W., Miller, B.I., Sauer, N.J., Doerr, C.R.
Format: Article
Language:English
Subjects:
Amplifiers
Arrayed waveguide gratings
Channels
Devices
Diffraction gratings
Gratings (spectra)
Laser tuning
Multiplexing
Optical amplifiers
Optical waveguides
Power amplifiers
Power generation
Semiconductor lasers
Semiconductor optical amplifiers
Tunable circuits and devices
Tunable lasers
Tuning
Waveguide lasers
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Description
Summary:We present a new design for a digitally tunable laser using two waveguide grating routers with different free spectral range. For an N-channel device, both the number of required amplifiers and the number of required grating arms scale as the square root of N, resulting in a more compact device than previously demonstrated and better scaleability. Contrary to previously demonstrated devices with a reduced number of amplifiers, all wavelength channels are multiplexed together in one common channel, allowing for a higher output power. Tuning speeds below 10 ns are envisioned. Experimental results are presented.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2002.806863