What does this research mean for the field?

In 622 Mbps BPON systems, no single optical modulation format is universally optimal, but CSRZ is the most robust under demanding conditions such as 50 km fibre lengths and high split ratios. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To evaluate and compare the performance of conventional, chirped, and advanced optical modulation formats in a 622 Mbps broadband passive optical network under varying physical transmission constraints.

August 22, 2026Journal of Optical Communications

Performance analysis of various optical modulation formats for BPON systems under dispersion, fibre length and split ratio variations

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Authors

GKGurpreet KaurThapar Institute of Engineering & Technology ABAnshika BansalGuru Nanak Dev University RSRajandeep SinghGuru Nanak Dev University

Discussion

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Implication

Simulation study reveals carrier-suppressed return-to-zero modulation maintains lowest error rates across high-loss BPON systems, indicating modulation choice must match network reach.

Key Points

To evaluate and compare the performance of conventional, chirped, and advanced optical modulation formats in a 622 Mbps broadband passive optical network under varying physical transmission constraints.
Simulated a 622 Mbps BPON transmission link in OptiSystem utilizing PRBS generators, continuous-wave lasers, Mach-Zehnder modulators, and pulse generators.
Tested eight modulation formats (NRZ, RZ, duobinary, CSRZ, CNRZ, NCNRZ, ACNRZ, and VSBCSRZ) across varying chromatic dispersion levels, transmission lengths up to 50 km, and optical split ratios up to 1:64.
Chirped non-return-to-zero (CNRZ) and return-to-zero (RZ) formats yielded the lowest bit error rates (BER) over short transmission reaches and lower split ratios.
Carrier-suppressed return-to-zero (CSRZ) and alternate-chirped non-return-to-zero (ACNRZ) generated the highest overall Q-factors across tested conditions.
CSRZ was the only modulation format to remain below the uncorrected forward error correction (FEC) threshold at 50 km, and alongside ACNRZ was the only format within the FEC limit at a 1:64 split ratio.

Cite This Study

Kaur et al. (2026) studied this question.

synapsesocial.com/papers/6a895f74ca7ade938187e26e https://doi.org/10.1515/joc-2026-0240

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August 22, 2026Journal of Optical Communications

Performance analysis of various optical modulation formats for BPON systems under dispersion, fibre length and split ratio variations

View Full Paper

Ask AI

Bookmark

Authors

GKGurpreet KaurThapar Institute of Engineering & Technology ABAnshika BansalGuru Nanak Dev University RSRajandeep SinghGuru Nanak Dev University

Discussion

Member takes

Implication

Simulation study reveals carrier-suppressed return-to-zero modulation maintains lowest error rates across high-loss BPON systems, indicating modulation choice must match network reach.

Key Points

To evaluate and compare the performance of conventional, chirped, and advanced optical modulation formats in a 622 Mbps broadband passive optical network under varying physical transmission constraints.
Simulated a 622 Mbps BPON transmission link in OptiSystem utilizing PRBS generators, continuous-wave lasers, Mach-Zehnder modulators, and pulse generators.
Tested eight modulation formats (NRZ, RZ, duobinary, CSRZ, CNRZ, NCNRZ, ACNRZ, and VSBCSRZ) across varying chromatic dispersion levels, transmission lengths up to 50 km, and optical split ratios up to 1:64.
Chirped non-return-to-zero (CNRZ) and return-to-zero (RZ) formats yielded the lowest bit error rates (BER) over short transmission reaches and lower split ratios.
Carrier-suppressed return-to-zero (CSRZ) and alternate-chirped non-return-to-zero (ACNRZ) generated the highest overall Q-factors across tested conditions.
CSRZ was the only modulation format to remain below the uncorrected forward error correction (FEC) threshold at 50 km, and alongside ACNRZ was the only format within the FEC limit at a 1:64 split ratio.

Cite This Study

Kaur et al. (2026) studied this question.

synapsesocial.com/papers/6a895f74ca7ade938187e26e https://doi.org/10.1515/joc-2026-0240

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