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Widely Wavelength-Tunable DFB Laser Array Integrated With Funnel Combiner

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6 Author(s)

A wavelength-tunable distributed feedback (DFB) laser array integrated with a funnel combiner is described. Two types of optical combiner, namely a multimode interferometer (MMI) combiner and a funnel combiner, are compared theoretically and experimentally. It is shown that the funnel combiner is superior in terms of wavelength dependence and fabrication tolerance. The laser module covers the full C-band wavelength range ( ~38 nm), and a high fiber output power of 40 mW (16 dBm) is obtained with stable single-mode operation.

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Selected Topics in Quantum Electronics, IEEE Journal of  (Volume:13 ,  Issue: 5 )