• 한국광학회:학술대회논문집
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• 한국광학회 2001년도 하계학술발표회
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• pp.12-13
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• 2001

• Journal of the Optical Society of Korea
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• 제19권3호
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• pp.222-227
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• 2015

We propose a new and potentially integrable scheme for the realization of an all-optical binary full adder employing two XOR gates, two AND gates, and one OR gate. The XOR gate is realized using a Mach-Zehnder interferometer (MZI) based on a semiconductor optical amplifier (SOA). The AND and OR gates are based on the nonlinear properties of a semiconductor optical amplifier. The proposed scheme is driven by two input data streams and a carry bit from the previous less-significant bit order position. In our proposed design, we achieve extinction ratios for Sum and Carry output signals of 10 dB and 12 dB respectively. Successful operation of the system is demonstrated at 10 Gb/s with return-to-zero modulated signals.

• Journal of the Optical Society of Korea
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• 제13권2호
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• pp.299-299
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• 2009

• Bulletin of the Korean Chemical Society
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• 제25권9호
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• pp.1427-1429
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• 2004

• 한국광학회:학술대회논문집
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• 한국광학회 2007년도 동계학술발표회 논문집
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• pp.219-220
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• 2007

• 한국광학회:학술대회논문집
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• 한국광학회 1996년도 Advance Program of 13th optics andquantum Electronics conference, 1996제13 회 광학 및 양자전자 학술 발표회 논문 요약집
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• pp.29-29
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• 1996

• 한국광학회:학술대회논문집
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• 한국광학회 2004년도 제15회 정기총회 및 동계학술발표회
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• pp.362-363
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• 2004

• 한국광학회:학술대회논문집
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• 한국광학회 2008년도 하계학술발표회 논문집
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• pp.249-250
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• 2008

• 한국전자통신학회논문지
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• 제15권1호
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• pp.39-44
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• 2020

유리기판위에 스퍼터링법으로 비정질 BaTiO₃막을 증착시켰다. 증착된 BaTiO₃ 막을 코로나 폴링을 하여 광학적 특성을 조사하였다. 가시광영역에서 투과율은 80% 이상으로 좋았으며, 비선형광학 특성은 폴링 조건에 따라 영향을 받으며, 크기는 1.15pm/V였다. 장기특성도 한달이 지나도 60%이상 유지하였다. 또한 BaTiO₃ 박막으로부터 녹색광 발생을 확인하였다.

• Journal of the Optical Society of Korea
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• 제15권3호
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• pp.232-236
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• 2011

We analyze the linear equalizers used in optically amplified on-off-keyed (OOK) systems to combat chromatic dispersion (CD) and polarization mode dispersion (PMD), and we derive the mathematical minimum mean squared error (MMSE) performance of these equalizers. Currently, the MMSE linear equalizer for optical OOK systems is obtained by simulations using adaptive approaches such as least mean squared (LMS) or constant modulus algorithm (CMA), but no theoretical studies on the optimal solutions for these equalizers have been performed. We model the optical OOK systems as square-law nonlinear channels and compute the MMSE equalizer coefficients directly from the estimated optical channel, signal power, and optical noise variance. The accuracy of the calculated MMSE equalizer coefficients and MMSE performance has been verified by simulations using adaptive algorithms.