Title: All-optical data format conversion in synchronously modulated single-mode Fabry-Perot laser diode using external injection-locking-induced nonlinear threshold reduction effect
Authors: Lin, GR
Chang, YC
Lin, YH
Chen, JH
Department of Photonics
Keywords: data format conversion;injection locking;laser diode;optical communication
Issue Date: 1-Jun-2005
Abstract: High-speed all-optical data-format conversion and logic gate from a synchronously modulated Fabry-Wrot laser diode (FPLD) below threshold condition is demonstrated by using external injection-induced. nonlinear threshold reduction effect of the FPLD. A pulsed pseudoreturn-to-zero (PRZ) data with maximum extinction ratio of 14.5 dB is obtained by externally seeding the 9.953-Gb/s (OC-192) nonreturn-to-zero (NRZ) data stream to optically gain-switch the FPLD. At optimized radio frequency and optical injecting powers of 24 and 4 dBm, the root mean square timing jitter and the duty-cycle (pulsewidth) of the PRZ eye pattern are determined as 0.4 ps and 45% (44 ps), respectively. The bit-error rate (BER) can be as low as 10(-13) under the 4-dBm external injecting power. A 1.5-dB power penalty with the BER of < 10(-9) is measured at a bit rate of 9.953 Gb/s. Highest NRZ-to-PRZ conversion rate of 12.5 Gb/s is achieved by increasing biasing current of the FPLD.
URI: http://dx.doi.org/10.1109/LPT.2005.846952
ISSN: 1041-1135
DOI: 10.1109/LPT.2005.846952
Volume: 17
Issue: 6
Begin Page: 1307
End Page: 1309
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