Results 91 to 100 of about 4,276 (223)
Interferometric noise suppression based DWDM optical system [PDF]
, 2015 학위논문(박사) - 한국과학기술원 : 전기및전자공학부, 2015.8 ,[vii, 112 p. :]최근, 엑세스 및 메트로망에서 지속적으로 증가하는 대역폭 수요를 대처하기 위해 고밀도 파장분할 다중방식 (DWDM: Dense Wavelength Division Multiplexing) 광통신 시스템이 궁극적인 해결책으로 고려되고 있다. DWDM 시스템은 head-end와 tail-end 사용자 사이를 가상의 점대점 연결방식을 기반으로 하여 높은 대역폭,
유상화, Yoo, Sang Hwa
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Estimation of DWDM Transmission for Broadband Access with FBG Technology [PDF]
, 1970 In this paper authors have measured amplitude transfer functions of FBG technology optical filters with 50 GHz and 100 GHz FWHM bandwidth and have evaluated their performance in 2.5 Gbit/s and 10 Gbit/s DWDM transmission system over a typical length of ...
O. Ozolins, G. Ivanovs
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Sistema para cálculo de enlaces ópticos DWDM [PDF]
, 2013 A crescente demanda por capacidade de transmissão de dados por fibra óptica é atendida pela implantação de sistemas Dense Wavelenght Division Multiplexing (DWDM).
Canal, Bruno
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INVESTIGATION ON HYBRID WDM (DWDM+CWDM) FREE SPACE OPTICAL COMMUNICATION SYSTEM [PDF]
ICTACT Journal on Communication Technology, 2015 Free Space Optical (FSO) communication is being realized as an effective solution for future accessing networks, offering light passed through air. The performance of FSO can be primarily degraded by various atmospheric attenuation namely, rain, fog ...
S. Robinson, S. Jasmine, R. Pavithra
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Guangtongxin yanjiu, 2015 综述了高速DWDM（密集波分复用）系统中的关键技术,包括QPSK（四相相移键控）、8QAM（8进制正交幅度调制）和16QAM（16进制正交幅度调制）等新型调制格式、超低损耗光纤/拉曼放大和新型光集成器件,并分析、比较了这些关键技术对DWDM系统传输产生的不同影响。在此基础上,介绍了近年来DWDM大容量传输的一些成功试验。试验表明,这些关键技术有着广阔的应用前景。
章喆, 陈征, 马卫东
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Multi-wavelengths Narrowband Filters for DWDM Systems [PDF]
, 2008 We investigate the possibility of optical waveguide with multi-levels index of refraction in the core region (more than two-levels) for multi-wavelengths applications analytically and numerically. We show that with slowly varying apodization all of dense
A. Rostami [a
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مجلة جامعة دمشق للعلوم الهندسيةقدم هذا البحث تصميم وتنفيذ لنظامي اتصالات تعدد الإرسال بتقسيم الطول الموجي الكثيف، التقليدي DWDM، والمعتمد على تقنية التعديل المطالي التربيعي ثنائي الاستقطاب من الدرجة 16 DP-16QAM DWDM، وتمت المقارنة بينهما، حيث أن تقنية التعديل DP-16QAM تقدم فعالية ...
حسن محسن الراعي +1 more
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Guangtongxin yanjiu, 2003 针对当前密集波分复用（DWDM）技术迅猛发展的趋势,对一些在DWDM系统测试中应用较为广泛的高精度光波长测量技术进行了介绍,并对光波长测量仪表的开发方向作了一定的探讨.
吕辉, 黄龙波
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STUDI PENERAPAN ROUTER UNTUK METRO DWDM [PDF]
, 2006 Perkembangan teknologi komunikasi dan tingginya kebutuhan informasi yang beraneka macam saat ini, mendorong dikembangnya suatu perangkat yang baru untuk diaplikasikan bagi kebutuhan layanan yang tinggi.
Wahyu Prasetyo
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Guangtongxin yanjiu, 2019 在5G前传网络中,单纤双向是重要的特征之一,相比4G和光纤接入（FTTx）网络中的单纤双向,5G前传网络中的单纤双向更为复杂。文章分析了在5G前传网络中实现单纤双向的情况及实现单纤双向关键光器件的原理,并分析了单纤双向系统的串扰源问题。分析结果表明,基于单只密集波分复用（DWDM）器件的DWDM单纤双向方案比基于光环行形器的DWDM单纤双向方案更有优势。
杨春, 胡春琳
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