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Long-Reach 100 Gbit Ethernet Light Source Based on 425-Gbit/s 1.3-µm InGaAlAs EADFB Lasers
Takeshi FUJISAWA Kiyoto TAKAHATA Takashi TADOKORO Wataru KOBAYASHI Akira OHKI Naoki FUJIWARA Shigeru KANAZAWA Takayuki YAMANAKA Fumiyoshi KANO
IEICE TRANSACTIONS on Electronics
Publication Date: 2011/07/01
Online ISSN: 1745-1353
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Joint Special Section on Opto-electronics and Communications for Future Optical Network)
100 Gbit Ethernet, electroabsorption modulator, transmitter optical subassembly, can-type package,
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High-performance 1.3-µm electroabsorption modulators integrated with DFB lasers are developed for long-reach 100 Gbit Ethernet. The dynamic extinction ratio of over 8-dB with the voltage swing of 2 V are achieved for the four LAN-WDM lanes (14 nm wavelength range) used in 100 Gbit Ethernet with the same modulator structure. The fabricated devices are packaged in butterfly modules and four-lane 40-km single mode fiber transmission at 25-Gbit/s operation is demonstrated. Further, a can-type transmitter optical subassembly is fabricated to reduce the cost and size of transmitter modules. The use of a low-dielectric-constant liquid crystal polymer transmission line makes the 3-dB bandwidth larger and enables 25-Gbit/s operation with CAN-TOSA module.