Low-threshold four-wavelength DFB laser array for multigigabit/s high-density WDM systems applications
1991; Institute of Electrical and Electronics Engineers; Volume: 3; Issue: 11 Linguagem: Inglês
10.1109/68.97828
ISSN1941-0174
AutoresL.A. Wang, Yu‐Hwa Lo, M. Zafar Iqbal, Jacque C. Young, P.S.D. Lin, Antoni S. Góźdź,
Tópico(s)Advanced Photonic Communication Systems
ResumoA 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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