Abstract
A compact highly efficient wavelength (de)multiplexer with channel spacing of 100 GHz has been realized with a monolithically integrated asymmetric 2 /spl times/ 2 Mach-Zehnder interferometer using a single step sputtered SiO/sub 2/-annealing quantum-well intermixing process. Wavelength tunability and asymmetric loss rebalancing of the device is demonstrated using current injection. Wavelength tuning over 0.8 nm is achieved with only 6 mA of injected current. An extinction ratio of more than 27 dB is obtained.
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