Demonstration of 10.7-Gb/s transmission in 50-km PON with Uncooled Free-Running 1550-nm VCSEL

Abstract

First-known demonstration of an uncooled, free-running 1550 nm VCSEL at 10.7 Gb/s over 50 km PON uplink with 35 km SMF and 15 km inverse dispersion fiber, achieving 24 dB margin for 10 -9 BER.

Free-Running 1550 nm VCSEL for 107 Gb/s Transmission in 997 km PON

“…We extend on our previous investigations [11][12][13] of the performance of a cooler-less 1550 nm VCSEL directly modulated at 10.7 Gb/s. We report on error-free transmission of the optical Manuscript received July 9, 2010 − 1 bits, with a receiver power level of −19 dBm; this is similar to the sensitivity levels reported by injection-locked systems operating at 10 Gb/s [9].…”

“…With 35 km and 40 km SMF, a BER floor was observed at 1 × 10 −3 and 6 × 10 −3 , respectively, when a PRBS of length 2 15 − 1 bits was used. Although previous work had produced shorter dispersion-limited link lengths [11,12], subsequent efforts led to the realization that the selection of laser bias far away from threshold, along with a larger amplitude input electrical signal than previously employed, produced an optical output signal that was suitable for longer range optical transmission before dispersion compensation became necessary [13]. We were thus able to exploit these electrical drive conditions to achieve error-free transmission of this data signal over 40 km of uncompensated SMF.…”

All-VCSEL based digital coherent detection link for multi Gbit/s WDM passive optical networks

“…By employing digital signal processing algorithms, however, we demonstrate that these limitations can be overcome. Additionally, coherent detection combined with digital signal processing facilitates the use of DSP based chromatic dispersion compensation, thereby eliminating the need for dispersion compensating fiber (DCF) [10]. In combination with the increased sensitivity of coherent detection systems, this makes coherent detection VCSEL based systems a strong candidate for future access networks, while also enabling graceful upgrade due to the ability to operate over the current PON architectures.…”

1.5-$\mu{\rm m}$ 10-Gb/s VCSEL Link for Optical Access Applications

“…Previous approaches to overcome this chirp-induced performance degradation in 1.5-μm 10-Gb/s VCSELs include the use of injection locking [8], DCMs [5], inverse-dispersion fiber [9], electrical dispersion compensation [10], and narrow optical filtering [6]. These approaches, however, either introduce added cost and complexity to the system, or have been demonstrated using short pseudorandom bit sequence (PRBS) lengths which do not represent real data.…”