Low-threshold four-wavelength DFB laser array for multigigabit/s high-density WDM systems applications |
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| Authors: | L.A. Wang Y.H. Lo M.Z. Iqbal J. Young P.S.D. Lin A.S. Gozdz |
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| Affiliation: | Bellcore, Red Bank, NJ, USA; |
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| Abstract: | A high-speed four-wavelength distributed-feedback (DFB) laser array with narrow wavelength spacings ( approximately 3 nm), very low-threshold currents ( approximately 5 mA), and all wavelengths, and operating (1540-1550 nm) within the erbium-doped fiber amplifier bandwidth has been fabricated. Electrical crosstalk of less than -25 dB up to 5 GHz was measured and a small wavelength drift caused by heating effects was observed for adjacent lasers. However, neither the electrical crosstalk nor the thermal effect causes any sensitivity penalties in a high-speed wavelength-division multiplexing transmission system.<> |
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