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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 24, Iss. 4 — Apr. 1, 2006
  • pp: 1903–

Characteristics of Multimode Fiber Bragg Gratings and Their Influences on External-Cavity Semiconductor Lasers

Hong-Gang Yu, Yong Wang, Qing-Yang Xu, and Chang-Qing Xu

Journal of Lightwave Technology, Vol. 24, Issue 4, pp. 1903- (2006)


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Abstract

Characteristics of multimode fiber Bragg gratings (MMFBGs) are systematically studied. Dependence of the reflection spectra of MMFBG on excitation conditions, refractive-index change profile, and grating length is investigated experimentally. It is observed that the transmission spectra of the MMFBGs are more sensitive to the polarization state of input light than that of single-mode FBGs (SMFBGs). The influences of the fabrication conditions of MMFBGs (i.e., UV-exposure time) and the rotation of MMF on the output spectra of the MMFBG-based external-cavity semiconductor lasers are then investigated. It is found that the side-mode-suppression ratio and the spatial wavelength-locking region at a specific Bragg wavelength of an MMFBG are dependent on the refractive-index change profile of the grating.

© 2006 IEEE

Citation
Hong-Gang Yu, Yong Wang, Qing-Yang Xu, and Chang-Qing Xu, "Characteristics of Multimode Fiber Bragg Gratings and Their Influences on External-Cavity Semiconductor Lasers," J. Lightwave Technol. 24, 1903- (2006)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-24-4-1903

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