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A Study on the Integrated-Optical Electric-Field Sensor utilizing Ti:LiNbO3 Y-fed Balanced-Bridge Mach-Zehnder Interferometric Modulators

Ti:LiNbO3 Y-fed Balanced-Bridge 마하젠더 간섭 광변조기를 이용한 집적광학 전계센서에 관한 연구

  • Jung, Hongsik (Dept. of Electronic & Electrical Eng., Hongik University)
  • 정홍식 (홍익대학교 전자전기공학과)
  • Received : 2015.10.08
  • Accepted : 2015.12.29
  • Published : 2016.01.25

Abstract

We have demonstrated a $Ti:LiNbO_3$ electro-optic electric-field sensors utilizing a $1{\times}2$ Y-fed balanced-bridge Mach-Zehnder interferometric (YBB-MZI) modulator which uses a 3-dB directional coupler at the output and dipole patch antenna. The operation and design were proved by the BPM simulation. A dc switching voltage of ~16.6 V and an extinction ratio of ~14.7 dB are observed at a wavelength of $1.3{\mu}m$. For a 20 dBm rf power, the minimum detectable electric-fields are ~1.12 V/m and ~3.3 V/m corresponding to a dynamic range of about ~22 dB and ~18 dB at frequencies 10 MHz and 50 MHz, respectively. The sensors exhibit almost linear response for the applied electric-field intensity from 0.29 V/m to 29.8 V/m.

집적광학 $Ti:LiNbO_3\;1{\times}2$ Y-fed Balanced-Bridge 마하젠더 간섭기(YBB-MZI) 구조에 다이폴 패치 아테나를 적용해서 $1.3{\mu}m$ 파장대역에서 동작하는 전계센서를 구현하였다. BPM 전산모사를 통해서 소자 설계 및 동작성능을 검증하였고, $1.3{\mu}m$ 파장대역에서 ~16.6 V 스위칭전압과 이에 대응해서 소멸비는 ~14.7 dB로 측정되었다. 10 MHz, 50 MHz 각각의 주파수에서 감지 가능한 최소 전계는 1.12 V/m, 3.3 V/m로 측정 되었으며, 이에 대응되는 각 주파수에서 ~22 dB, ~18 dB의 다이나믹 범위가 측정되었다. 제작된 센서는 0.29~29.8 V/m 범위의 전계세기에 대해서 선형응답 특성을 나타내었다.

Keywords

References

  1. N. Kuwabara, K. Tajima, R. Kobayashi, and F. Amemiya, "Development and analysis of electric field sensor using $LiNbO_3$ optical modulator," IEEE Trans. Electromagn. Compat. 34(4), pp. 391-396, April 1992. https://doi.org/10.1109/15.179271
  2. Rong Zeng, Bo Wang, Ben Niu, and Zhanqing Yu, "Development and Application of Integrated Optical Sensors for Intense E-field Measurement," Sensors, Vol. 12, No. 8, pp. 11406-11434 , August 2012. https://doi.org/10.3390/s120811406
  3. H. S. Jung, "Photonic Electric-Field Sensor Utilizing an Asymmetric $Ti:LiNbO_3$ Mach- Zehnder Interferometer with a Dipole Antenna," Fiber and Integrated Optics, Vol. 31, No. 6, pp. 343-354, June 2012. https://doi.org/10.1080/01468030.2012.747229
  4. T. H. Lee, F. T. Hwang, W. T. Shay, and C. T. Lee, "Electromagnetc Field Sensor Using Mach-Zehnder Waveguide Modulator," Microwave and Optical Technol. Lett. 48(9), pp. 1897-1899, September 2006. https://doi.org/10.1002/mop.21776
  5. D. H. Naghski, J. T. Boyd, H. E. Jackson, S. Sriram, S. A. Kingsley, and J. Latess, "An Integrated Photonic Mach-Zehnder Interferometer with No Electrodes for Sensing Electric Fields," J. Lightwave Technol., 12, No. 6, pp. 1092-1098, June 1994. https://doi.org/10.1109/50.296204
  6. D. An, Z. Shi, L. Sun, J. M. Taboada, Q. Zhou, and X. Lu, "Polymeric electro-optic modulator based on 1$\times$2 Y-fed directional coupler," Appl. Phys. Lett., 76(15), pp. 98-104, April 2000.
  7. H. S. Jung, "Eletcro-optic electric-field sensors utilizing $Ti:LiNbO_3\;1{\times}2$ directional coupler with dipole antennas," Optical Engineering, Vol. 52, No. 6, pp. 064402, June 2013. https://doi.org/10.1117/1.OE.52.6.064402
  8. M. M. Howerton, C. H. Bulmer, and W. K. Burns, "Linear 1$\times$2 directional coupler for electromagnetic field detection," Appl. Phys. Lett., 52(22), pp. 1850-1852, April 1988. https://doi.org/10.1063/1.99731
  9. Rong Zeng, Bo Wang, Zhanqing Yu, Ben Niu, and Yong Hua, "Integrated optical E-field sensor based on balanced Mach-Zehnder inferometer," Optical Engineering, Vol. 50, No. 11, pp. 114404, November 2011. https://doi.org/10.1117/1.3651809
  10. Ruey-Ching Twu, "Zn-Diffused 1$\times$2 Balanced-Bridge Optical Switch in a Y-cut Lithium Niobate," IEEE Photonics Tech. Lett., Vol. 19, No. 16, pp. 1269-1271, August 2007. https://doi.org/10.1109/LPT.2007.902265
  11. Hongsik Jung, "Integrtaed-Optic Electric-Field Sensor Utilizing a $Ti:LiNbO_3$ Y-fed Balanced- Bridge Mach-Zehnder Interferometric Modulator With a Segmented Dipole Antenna," J. Optical Society of Korea, Vol. 18, No. 6, pp. 739-745, December 2014. https://doi.org/10.3807/JOSK.2014.18.6.739
  12. H. Nishihara, M. Haruna, and T. Suhara, Optical Integrated Circuits, McGraw-Hill Book Company, New York, Chapter 5, 1985.
  13. Optiwave, OptiBPM 9.0: Waveguide Optics Design Software.
  14. Bao Sun, et al, "Integrated Optical Electric Field sensor from 10 kHz to 18 GHz," IEEE Photonics Technol. Lett., Vol 24, No. 13, pp. 1106-1108, July 2012. https://doi.org/10.1109/LPT.2012.2195780