Temperature Compensation of 8 Channel DWDM Multiplexer Using All Optical Fiber Mach-Zehnder Structure 


Vol. 30,  No. 8, pp. 697-704, Aug.  2005


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  Abstract

In this paper, Passive Temperature Compensation Technology is apply to 8-channel Optical multiplexer with 100㎓ channel spacing. The 8-channel multiplexer is fabricated by connecting three cascaded Mach Zehnder Interferometer(MZI) of optical fiber type, and each interferometer has the wavelength interval of 100㎓, 200㎓ and 400㎓, respectively. Furthermore, to acquire uniform insertion loss, it is fabricated by using Wavelength Flatten Coupler(WFC) in which the variation of insertion loss is low. CO₂laser to adjust precisely the wavelength. The optical fiber is very sensitive in the thermal variation around. Thus, When fabrication the prototype, it is applied a technique to compensate the optical thermal effect because the center wavelength at the output is shifted according to the thermal variation around. In summary, The prototype composed by eight cascaded MZI has an insertion loss of 5.5 ㏈, the bandwidth of 0.8㎚ at 0.5 ㏈ point, and channel crosstalk of 25 ㏈. Furthermore, the loss dependent on polarization is measured as 0.06 ㏈. Consequently, the output wavelength is shifted within 0.05 ㎚ when the surrounding temperature varies until 60℃.

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  Cite this article

[IEEE Style]

J. H. Chang, J. H. Jung, Y. K. Kim, "Temperature Compensation of 8 Channel DWDM Multiplexer Using All Optical Fiber Mach-Zehnder Structure," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 8, pp. 697-704, 2005. DOI: .

[ACM Style]

Jin Hyeon Chang, Jin Ho Jung, and Young Kwon Kim. 2005. Temperature Compensation of 8 Channel DWDM Multiplexer Using All Optical Fiber Mach-Zehnder Structure. The Journal of Korean Institute of Communications and Information Sciences, 30, 8, (2005), 697-704. DOI: .

[KICS Style]

Jin Hyeon Chang, Jin Ho Jung, Young Kwon Kim, "Temperature Compensation of 8 Channel DWDM Multiplexer Using All Optical Fiber Mach-Zehnder Structure," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 8, pp. 697-704, 8. 2005.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880