• Title/Summary/Keyword: 단일모드광섬유

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Novel Criterions to determine Optimized Power coupling in Grating-Assisted Fiber Couplers (GAFCs) (격자구조형 광섬유 결합기에서 최적 전력결합을 결정하기 위한 새로운 조건)

  • Ho, Kwang-Chun;Ho, Kwang-Soo
    • Korean Journal of Optics and Photonics
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    • v.17 no.2
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    • pp.120-126
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    • 2006

  • A grating-assisted fiber coupler(GAFC), which consists of a thin-film waveguide with grating and circular optical fiber, is proposed and the optimized power coupling is evaluated by using a technique amenable to rigorous longitudinal modal transmission-line theory(L-MTLT). In addition, novel criteria to couple an optical signal incident through the grating waveguide to a single-mode optical fiber are proposed. The numerical result reveals that the optimized power coupling occurs at minimum-gap condition between rigorous modes rather than for the conventional phase-matching condition.

  • https://doi.org/10.3807/KJOP.2006.17.2.120 인용 PDF KSCI

Performance Improvement of WDM Signals through Precompensation and Postcompensation in Dispersion Managed Optical Transmission Links with Artificial Distribution of Single Mode Fiber Length and RDPS (인위적인 단일 모드 광섬유 길이와 RDPS 분포를 갖는 분산 제어 광전송 링크에서 선치 보상과 후치 보상을 통한 WDM 신호의 성능 개선)

  • Lee, Seong-Real
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.16 no.10
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    • pp.2293-2302
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    • 2012

  • New optical transmission links technique for compensating of the distorted wavelength division multiplexed (WDM) signals due to group velocity dispersion (GVD) and self phase modulation (SPM) in single mode fiber (SMF) are proposed. The proposed optical links have optical phase conjugator (OPC) placed at nearby WDM transmitter or receiver and repeater spans with artificial distribution of SMF length and residual dispersion per span (RDPS). It is confirmed that optimal link configuration expanding effective launching power range and effective net residual dispersion (NRD) by improving system performance is that having OPC closely placed at WDM receiver and the gradually descended distribution of SMF length and RDPS of each repeater spans, related with the gradually increased optical link length. And, it is also confirmed that NRD is controlled by postcompensation in optimal optical link with OPC closely placed at WDM receiver.

  • https://doi.org/10.6109/jkiice.2012.16.10.2293 인용 PDF KSCI