共查询到19条相似文献,搜索用时 93 毫秒
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基于Sagnac干涉仪的级联型梳状滤波器 总被引:1,自引:0,他引:1
密集波分复用(DWDM)系统光信道数量的增加,使得与DWDM技术有关的各种光学滤波器技术成为当前光纤通信领域的研究热点.高双折射(HiBi)光纤环具有易于制作、性能稳定以及良好的滤波特性等特点,近年来受到广泛关注;通过增加Sagnac环内HiBi光纤和偏振控制器的个数,或者采用多个HiBi光纤Sagnac环的级联形式,... 相似文献
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目前密集波分复用(DWDM)系统已广泛应用于长途干线、城域网.并扩展至接入网。其中波分复用/解复用器是系统的核心器件之一.而50GHz的密集波分复用更要靠一种交叉波分复用(Interleaver)的全新器件.为此详细阐述了Interleaver的原理、主要实现方案及其特点。 相似文献
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当前光通讯信道密度的迅速增加和数据传输速率的不断提高对DWDM系统的性能提出了空前严格的要求。而Interleaver就是50GHz的DWDM系统中所必须采用的一种全新器件,本文介绍了Interleaver的温度稳定性、带宽以及色散问题的几种解决方法。 相似文献
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尹轶群 《光纤与电缆及其应用技术》2008,(1):1-3
随着信息量的不断增大,信息传输的速率也不断增加,Interleaver则成为了DWDM系统中的一种重要的器件,为此较系统地介绍了Interleaver的理论及应用, 并对50 GHz Interleaver目前的技术状况和实现方法作了较为全面的阐述和比较. 相似文献
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随着光纤通信的迅速发展,大容量光纤通信系统在不断地开发、研究和投入使用。目前我国已相继建成了几条光纤密集波分复用系统(DWDM)。如何利用DWDM系统进行组网和进行电路调度是我们面临的一个新课题。尤其是在遇到重大通信障碍时,充分发挥DWDM容量大的特点,可以抢通和调度大量的电路,在运行维护中,我们曾尝试利用DWDM调度SDH2.5G系统解决了大容量的电路调度。 相似文献
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DWDM optical millimeter-wave generation for radio-over-fiber using an optical phase modulator and an optical interleaver 总被引:1,自引:0,他引:1
Jianjun Yu Zhensheng Jia Lei Xu Lin Chen Ting Wang Gee-Kung Chang 《Photonics Technology Letters, IEEE》2006,18(13):1418-1420
We have proposed and experimentally demonstrated a novel scheme to generate a dense wavelength-division multiplexing (DWDM) optical millimeter-wave source by using an optical phase modulator and an optical interleaver. The stability of the DWDM optical millimeter wave generation is largely improved because we use an optical phase modulator without a dc-bias controller and an optical interleaver is subsequently employed to suppress the optical carrier of the DWDM source, which is not as temperature sensitive as a fiber Bragg grating. Moreover, the limitation of chromatic dispersion is greatly reduced due to avoiding the generation of higher order sidebands via driving the phase modulator with optimized RF signal. 相似文献
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PMD compensation using birefringence photonic crystal fiber in 40Gbit/s optical communication system
CHEN Ming YANG Si-gang LI Jin-yan CHEN Wei XIE Shi-zhong 《光电子快报》2008,4(1):30-32
A birefringence photonic crystal fiber is used for PMD compensation in a single-channel 40Gbil/s-speed optical communication system with CSRZ format. The experimental results of transmission show that the PMD compensation system works effectively. 相似文献
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光纤通信系统中DWDM技术的近期发展 总被引:1,自引:0,他引:1
就光纤通信历史背景与现况需求作一概述,并介绍光纤通信的关键组件及系统,以密集波分复用(DWDM)技术为重点,叙述DWDM组件的主要制作技术及其重要性,以及DWDM的近期发展。 相似文献
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A novel equal diameter circular-hole photonic crystal fiber (PCF) with high birefringence is proposed and numerically analyzed by employing the finite-element method. The proposed PCF’s birefringence is 10-3, which can reach 2 orders higher than that of traditional high birefringence fiber, and this equal diameter circular-hole structure reduces the difficulty of the actual drawing process. The effect of different parameters on the birefringence of this PCF is investigated, and the application of the Sagnac interferometer based on fiber filling technology in temperature sensing is studied. The result shows that the high birefringence PCF can be used in both optical communication and optical sensing fields. 相似文献