Simplified single-photodetector direct detection of independent dual-single-sideband OFDM signals.

IF 3.3 2区物理与天体物理 Q2 OPTICS

Optics letters Pub Date : 2026-10-15 Epub Date: 2026-09-18 DOI:10.1364/OL.614182

JiaJun Chen, Jiangnan Xiao, XinLei Li, RuMeng Zhang, ShuQi Li

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引用次数: 0

Abstract

An independent dual-single-sideband (IDSSB) signal carries distinct data on its two optical sidebands, and conventional IDSSB receivers require two sideband-separation optical bandpass filters (OBPFs) and two photodetectors (PDs). We propose a simplified IDSSB direct-detection optical orthogonal frequency-division multiplexing (OFDM) scheme using one in-phase/quadrature (IQ) modulator and one PD together with a single noniterative digital signal processing (DSP) chain that recovers two independent left- and right-sideband quadrature phase shift keying (QPSK) OFDM streams from the synthesized 16-ary quadrature amplitude modulation (16-QAM) OFDM signal formed after photodetection. Simulations demonstrate 2 × 5.23-Gb/s transmission over 10-km standard single-mode fiber (SSMF), with the bit error rates (BERs) of both sideband signals below 3.8 × 10^-3. The optimum carrier-to-signal power ratio (CSPR) is found to be 2 dB. Compared with a conventional dual-OBPF/dual-PD receiver operating on the same transmitted waveform, the proposed receiver incurs an approximately 0.7-dB sensitivity penalty.

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简化的单光电探测器直接检测独立的双-单边带OFDM信号。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optics letters 物理-光学

CiteScore

6.60

自引率

8.30%

发文量

2275

审稿时长

1.7 months

期刊介绍： The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community. Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.