• Title/Summary/Keyword: optical tap coupler

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Low cost optical add/drop module for WDM optical transmission systems (WDM 기반의 광통신망을 위한 저가형 광신호 삽입/추출 모듈)

  • 조승현;박재동;정의석;김병휘;강민호;신동욱
    • Korean Journal of Optics and Photonics
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    • v.14 no.6
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    • pp.578-582
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    • 2003
  • We propose a novel structure of wavelength selective optical add/drop module comprising two tap couplers and a fiber Bragg grating. The device has unique features including a simpler structure and a lower cost of implementation as compared with existing devices for the same operation. The module performance has been measured and analyzed experimentally. The implemented prototype module shows good performance with no-crosstalk power penalty in a 155 Mbps per channel wavelength-division-multiplexing transmission system but suffers from a relatively high loss of 3.5 ㏈ and 21 ㏈ for transmitted and dropped channels, respectively. While the dropped channel extinction ratio was more than 25 ㏈, the transmitted channel extinction ratio was more than 35 ㏈.