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We present a 3-section tapered DBR lasers with short bragg section and tapered active section that provides 20mW constant coupled output power and 15.5nm fast tuning (<10ms), and extremely stable characteristics over 2000-hour accelerated ageing.
We present a new concept of dielectric minor membranes for electro-thermally tunable optical filters and VCSELs. The perform ance of a fiber and first results of a VCSEL based on that concept are presented.
Summary form only given. Fabrication of Bragg mirrors is a key point in the realization of vertical-cavity surface-emitting lasers (VCSELs). At short wavelengths (0.8-0.98 /spl mu/m) the index step in the AlAs/GaAs system is about 0.6 and very high reflectivities can be reached with only 20 periods. At 1.3 or 1.5 /spl mu/m, the index step is lower and dielectric mirrors are commonly used but the device...
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