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Multiple wavelength tunable surface-emitting laser arrays

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7 Author(s)

Techniques to achieve wavelength multiplexing and tuning capabilities in vertical-cavity surface-emitting lasers (VCSELs) are described, and experimental results are given. The authors obtained 140 unique, uniformly separated, single-mode wavelength emissions from a 7×20 VCSEL array. Large total wavelength span (~ 430 Å) and small wavelength separation (~ 3 Å) are obtained simultaneously with uncompromised laser performance. All 140 lasers have nearly the same threshold currents, voltages, and resistances. Wavelength tuning is obtained by using a three-mirror coupled-cavity configuration. The three-mirror laser is a two-terminal device and requires only one top contact. Discrete tuning with a range as large as 61 Å is achieved with a small change in drive current of only 10.5 mA

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Quantum Electronics, IEEE Journal of  (Volume:27 ,  Issue: 6 )