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Investigation of Using Injection-Locked Fabry–Pérot Laser Diode With 10% Front-Facet Reflectivity for Short-Reach to Long-Reach Upstream PON Access

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6 Author(s)
Hsing-Yu Chen ; Dept. of Photonics, Nat. Chiao Tung Univ., Hsinchu, Taiwan ; Chien-Hung Yeh ; Chi-Wai Chow ; Jiun-Yu Sung
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In this paper, we propose and investigate an injection-locked Fabry-Pérot laser diode (FP-LD) with 10% front-facet reflectivity by using orthogonal frequency-division multiplexing-quadrature amplitude modulation (OFDM-QAM) in each optical network unit (ONU) for colorless operation in the carrier-distributed passive optical network (PON). Here, the 10-Gb/s 16-QAM OFDM upstream traffic can be generated via a 2.5-GHz-bandwidth injection-locked FP-LD for the short-reach (SR)-to-long-reach (LR) transmission. In this measurement, the CW injection power of -12 dBm for an injection-locked FP-LD is required to achieve 100-km single-mode fiber (SMF) transmission. Hence, error-free transmissions of 20-, 50-, 75-, and 100-km fiber lengths are achieved with the power penalties of 0.33, 0.86, 1.20, and 1.76 dB at the bit error rate (BER) of 3.8 × 10-3, respectively, for upstream traffic. Moreover, the relationship of CW injection power and signal-to-noise ratio (SNR) of each OFDM subcarrier in the injection-locked FP-LD has also been analyzed.

Published in:

Photonics Journal, IEEE  (Volume:5 ,  Issue: 3 )