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1.3- \mu m 4 ,\times, 25-Gb/s Monolithically Integrated Light Source for Metro Area 100-Gb/s Ethernet

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11 Author(s)
Fujisawa, T. ; NTT Photonics Labs., Atsugi, Japan ; Kanazawa, S. ; Ishii, H. ; Nunoya, N.
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A 1.3- monolithically integrated light source for metro area 100-Gb/s Ethernet is developed. Four 25-Gb/s electroabsorption modulators integrated with distributed-feedback lasers and their multiplexer are monolithically integrated on one chip. A shallow ridge waveguide is used for lasers and modulators for large modulation bandwidth, and a deep ridge waveguide is used for the multiplexer region due to its low bending and radiation losses. The integration of hetero-waveguide devices enables the very small chip size of 22.6 . With the device, 100-Gb/s (4 25-Gb/s simultaneous) operation is demonstrated with the clear eye-openings, and error-free 40-km single-mode fiber transmission is achieved for the first time.

Published in:

Photonics Technology Letters, IEEE  (Volume:23 ,  Issue: 6 )