Tunable laser

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Tunable lasers are used in DWDM-systems to allow wavelength (frequency) changes controlled by the operator.

Dye lasers, using organic dyes as lasing medium, are frequently employed. Other types that can be tuned are the Ti-sapphire laser and some semiconductor lasers.

Contents 1 Narrowband Tunable Lasers 2 DFB Arrays 3 Externally Cavity Lasers 4 VCSELs 5 See also

[edit] Narrowband Tunable Lasers

Usually thermally tuned DFB lasers. Maximum tuning range: 8 nm

[edit] DFB Arrays

Several DFB lasers operating at different frequencies (coarse tuning) and additionally thermally tuned (fine tuning)

[edit] Externally Cavity Lasers

[edit] VCSELs

Main article: VCSEL

[edit] See also

• Dye laser