Long-Reach 100Gbit Ethernet Light Source Based on 4×25-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

doi:10.1587/transele.E94.C.1167

Joint Special Section on Opto-electronics and Communications for Future Optical Network

Long-Reach 100Gbit Ethernet Light Source Based on 4×25-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

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Keywords: 100Gbit Ethernet, electroabsorption modulator, transmitter optical subassembly, can-type package

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2011 Volume E94.C Issue 7 Pages 1167-1172

DOI https://doi.org/10.1587/transele.E94.C.1167

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Abstract

High-performance 1.3-µm electroabsorption modulators integrated with DFB lasers are developed for long-reach 100Gbit Ethernet. The dynamic extinction ratio of over 8-dB with the voltage swing of 2V are achieved for the four LAN-WDM lanes (14nm wavelength range) used in 100Gbit 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.

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