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Tunable electroabsorption modulated laser integrated with a bent waveguide distributed-feedback laser

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9 Author(s)
Tanbun-Ek, T. ; Lucent Technol., Murray Hill, NY, USA ; People, R. ; Fullowan, T. ; Bethea, C.
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The fabrication of the first 1.55-μm wavelength tunable electroabsorption modulated laser integrated with a bent waveguide distributed-feedback laser is reported. A low-threshold and stable single-mode operation is obtained when the devices were uniformly pumped. A single-mode output power close to 10 mW from a single-mode fiber (40 mW in free space) is obtained with a 0 V bias to the modulator and an extinction ratio of up to 15 dB at 2.5 V. This single mode stability is due to the continuously distributed phase shift implemented in the structure. With a nonuniform injection, it was possible to select one particular mode out of the three neighboring modes inside the broad-reflection band of the reflector. A tuning range of 3.5 mm was obtained while maintaining an output power of more than 2 dBm from each mode.

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Photonics Technology Letters, IEEE  (Volume:9 ,  Issue: 5 )