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Very high-speed light-source module up to 40 Gb/s containing an MQW electroabsorption modulator integrated with a DFB laser

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8 Author(s)
Takeuchi, H. ; NTT Opto-Electron. Labs., Kanagawa, Japan ; Tsuzuki, K. ; Sato, K. ; Yamamoto, Mitsuo
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A very high-speed integrated light source up to 40 Gb/s has been developed. The InGaAsP MQW integrated light source consists of an multiple-quantum-well (MQW) electroabsorption (EA) modulator and a distributed-feedback (DFB) laser. After optimizing the structure of the integrated modulator, the device is packaged in a compact module with a single-mode fiber (SMF). While the DFB laser is injected with a constant current, the integrated MQW electroabsorption modulator is driven with a 40-Gb/s electrical NRZ signal. A clearly-open eye diagram is observed in the modulated light from the modulator. Further, a receiver sensitivity of -27.2 dBm at 10-9 is experimentally confirmed in bit-error-rate (BER) performance. Highly resolved optical short pulse is also generated at a repetition rate of 40 GHz using the new light-source module

Published in:

Selected Topics in Quantum Electronics, IEEE Journal of  (Volume:3 ,  Issue: 2 )

Date of Publication:

Apr 1997

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