The analysis of crosstalk in multichannel wavelength division multiplexed optical transmission systems and its impact on multiplexer design

Multiple Access Techniques for Fiber-Optic Networks

“…It has been shown that in order to achieve crosstalk levels of less than −20 dB, a channel spacing of at least twice the filter selectivity is required [93]. Thus, for a source linewidth of 30 nm (that is, the linewidth of 1.5-m erbium-doped fiber amplifiers) and a channel selectivity of 0.15 nm, no more than 100 channels can be supported with crosstalk conditions better than −20 dB.…”

Analysis of linear crosstalk in photonic crossbar switches based on on/off gates

“…1)p(1 ? p)I 2 1 =C 2 : (7) This uctuation degrades the BER just as receiver noise does. Considering crosstalk as another Gaussian noise, independent of receiver noise, yields a BER as follows:…”

“…For instance, 0 +2j 1 j = p(1?p)I 2 1 L 2 =C 2 for every 2 0; 1] with raised-cosine pulses. A = 0 pulse always has a xed worst-case 2 x equal to (7), independent of bit-skews, and a discrete random analysis (8) predicts its BER accurately. However, with increasing , the average crosstalk, 0 , decreases, and thus, the BER decreases.…”