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High bit rate and elevated temperature data transmission using InGaAs quantum-dot lasers

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15 Author(s)
Tan, K.T. ; Eng. Dept., Univ. of Cambridge, UK ; Marinelli, C. ; Thompson, M.G. ; Wonfor, A.
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A 5-Gb/s data modulation and transmission is investigated using Fabry-Pe/spl acute/rot InGaAs quantum-dot lasers emitting at approximately 1.3 μm. Error-free transmission of 5-Gb/s data at room temperature over 4 km of single-mode fiber (SMF) and over 500 m of installed grade multimode fiber are demonstrated for the first time. The temperature dependence of the data modulation performance is also studied. We report error-free 2.5-Gb/s data modulation up to 50/spl deg/C and transmission over 4 km of SMF with a Q-factor penalty of 0.5 dB. Error-free 5-Gb/s data modulation is observed up to 30/spl deg/C and 5-Gb/s data transmission over 4 km of SMF with a Q-factor penalty of 0.8 dB is obtained at 40/spl deg/C. The lack of overshoot and ringing in the eye diagrams is attributed to the large damping factor observed under small-signal modulation.

Published in:

Photonics Technology Letters, IEEE  (Volume:16 ,  Issue: 5 )