• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2015.10a
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• pp.961-963
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• 2015

In this study, we studied the effect of $Co^{60}$ gamma-radiation on the fiber Bragg gratings written by femtosecond UV laser in single mode optical fibers. The fiber Bragg gratings were exposed to gamma-radiation up to a dose of about 31.6 kGy at the dose rate of 106 Gy/min. According to the experimental data and analysis results, we confirmed Bragg gratings written by femtosecond laser have the excellent radiation-hardened characteristics for high radiation environments.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.30 no.1A
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• pp.1-9
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• 2005

We have studied the dispersion properties of a 40 channel x 10 Gbit/s wavelength division multiplexer(WDM) transmission link using standard single mode fiber with all EDFA amplification over 30 x 100 km spans. The dispersion map of the link was investigated by adding fiber sections with positive or negative dispersion at the transmitter, within each amplifier span, and at the receiver. Optimum combinations of these dispersive fiber lengths were attained to significantly enhance the overall transmission performance.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2022.10a
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• pp.623-625
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• 2022

In this paper, the proton induced attenuation characteristics were evaluated for 5 types of commercial single-mode optical fibers using a proton accelerator. The proton beam used in the irradiation test has a high energy of 100 MeV class, and the test was performed by setting the uniformity of the beam irradiation area to 10% or less. According to the type of optical fiber (internal material, impurities), the radiation induced attenuation by the proton irradiation showed a noticeable difference.

• The Optical Journal
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• v.12 no.5 s.69
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• pp.98-99
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• 2000

광섬유통신은 현재 이미 현대 전송망의 주체가 됐고 세계적으로 고속 성장했다. 부단한 탐색과 노력을 거쳐 1999년 중국의 광통신 산업은 이미 수확의 계절에 들어섰고 제품은 국가 주요통신네트에서 더욱더 많은 응용을 가져왔다. 한중민간경제협의회 자료를 통해서 중국 광통신산업에 대해서 알아본다.

• Defense and Technology
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• no.1 s.71
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• pp.39-45
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• 1985

• Journal of the Korean Professional Engineers Association
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• v.13 no.2
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• pp.55-60
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• 1980

• Journal of the Korean Professional Engineers Association
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• v.13 no.3
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• pp.53-56
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• 1980

• Optical Science and Technology
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• v.4 no.2
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• pp.25-33
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• 2000

• The Magazine of the IEIE
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• v.11 no.3
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• pp.1-7
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• 1984

• The Magazine of the IEIE
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• v.11 no.1
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• pp.25-28
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• 1984