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Optical power equalization for upstream traffic with injection-locked Fabry-Perot lasers in TDM-PON |
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| Authors: | Ting-Tsan Huang Lih-Gen Sheu |
| Affiliation: | a Department of Photonics Engineering, Yuan Ze University, Chung-Li 320-03, Taiwan b Department of Electro-Optical Engineering, Vanung University, Chung-Li 320-03, Taiwan c Department of Photonics and Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 300-10, Taiwan |
| Abstract: | An optical power equalization of upstream traffic in time-division-multiplexed passive optical network (TDM-PON) based on injection-locked Fabry-Perot lasers has been experimentally investigated. The upstream transmitters with stable spectrum are achieved by using an external injection light source in the optical line terminal (OLT). The different upstream powers can be equalized by injection locking a Fabry-Perot laser diode (FP-LD) biased below threshold current in OLT. The dynamic upstream power range from − 8.5 to − 19.5 db m is reduced to a 1.6 dB maximal power variation, when the uplink signal is directly modulated at 1.25 Gb/s. |
| Keywords: | Passive optical networks (PONs) Fabry-Perot laser diodes Injection-locked |
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