Analysis of ASE-Related Impairments on Wavelength-Reuse WDM-PONs Based on Self-Seeded Reflective SOAs

Abstract

We experimentally investigate the impact of chromatic dispersion (CD), post-filtering effects (PFEs), and backreflection-induced penalties on intensityremodulation topologies based on self-seeded directly modulated reflective semiconductor optical amplifiers (RSOAs) acting as downstream carriers. Optical eye diagrams and power penalties as a function of link reach and reflection tolerances, as well as optical spectra and bit error rate (BER) performance up to 100 km, are measured and directly compared to a conventional prespectrum slicing light (PSSL) injection topology, in order to highlight the advantages and drawbacks of the self-seeding scheme. Downstream and bidirectional reaches up to 80 and 60 km, respectively, with a maximum 2 dB power penalty (for a BER of 10 −12 ) at 1.25 Gb/s operation are demonstrated in our self-seeding configuration, which enables enhanced resilience to CD and PFE effects while surpassing the conventional PSSL scheme in about 40 km.

High‐bit‐rate SOA‐based optical network unit with low seeding power that uses feedback seeding scheme

“…The result of the self-seeding scheme is incoherent light, which is suitable for low-data-rate communication. Moreover, an advantage of this scheme is that it saturates the RSOA, thus, suppresses the noise generated by the amplifier [10][11][12][13][14][15][16][17][18][19][20][21]. Although both remote seeding and self-seeding schemes provide flexible and low-cost solutions, they have some limitations.…”

Self-Seeded RSOA-Fiber Cavity Lasers vs. ASE Spectrum-Sliced or Externally Seeded Transmitters—A Comparative Study

“…We believe this question is answered with what is called the self-seeded RSOA-FCL transmitter shown in Figure 1b [3,[17][18][19][20]. In contrast to the externally seeded scheme, the RSOA-FCL does not need extra laser sources.…”

Enhancement of maximum reach on spectrum‐sliced ASE systems employing self‐seeded reflective‐SOAs transmitters

“…Introduction: The use of seeded and directly modulated reflective semiconductor optical amplifiers (RSOAs) based on the injection of spectrum-sliced amplified spontaneous emission (ASE) has been actively investigated as a path for the deployment of cost-effective wavelength division multiplexing passive optical networks [1][2][3][4][5][6]. This is because the wide spectral gain of the RSOA combined to the broadband spectrum of the ASE enables the design of colourless transmitter setups for the optical line terminal (OLT) and optical network terminations (ONTs), serving up to 80 channels per optical band [3], while keeping the low-cost features.…”

“…However, the optical content of ASE-injected signals prevents the deployment of long-reach networks due to the impact of several impairment effects. These impairments originated from the spectral-slicing of the ASE-based broadband light source (BLS) and include chromatic dispersion (CD) [5,6], postfiltering effects (PFE) [1,2,6] and relative intensity noise (RIN) [3].…”

“…Thus, the SS topology excludes the need of an external BLS, eliminating the strong dependence of the transmission performance on the features of the shared seed-light such as the optical bandwidth, optical spectral flatness and optical power levels features which limit the number of available channels. We used the same optical components already described in our previous work [6]. The maximum launched power at point A and was set to −1 dBm.…”