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Design and analysis of a mode-hop-free tunable laser based on etched diffraction grating

Abstract

A novel semiconductor laser which can achieve mode-hop-free tuning is proposed. The device consists of an etched diffraction grating (EDG) as a dispersive element to provide the mode selection function and an active waveguide to provide optical gain for the laser. The slab waveguide region of the EDG contains a tuning section covered by an electrode to inject a tuning current, and thus changes the refractive index. Mode-hop-free tuning is achieved by specially designing the shape of the tuning section, so that the tuning rate of the central wavelength reflected by the EDG and the tuning rate of the resonant wavelength of the laser cavity are equal. An optimized tuning section shape is designed to obtain the largest tuning range within a limited current range. Numerical simulation is presented to demonstrate the mode-hop-free tuning operation.

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References

  • Coldren, L.A., 2000. Monolithic tunable diode lasers. IEEE J. Sel. Topics Quantum Electron., 6(6):988–999. [doi:10.1109/2944.902147]

    Article  Google Scholar 

  • Fujiwara, N., Kakitsuka, T., Ishikawa, M., Kano, F., Okamoto, H., Kawaguchi, Y., Kondo, Y., Yoshikuni, Y., Tohmori, Y., 2003. Inherently mode hop-free distributed Bragg reflector (DBR) laser array. IEEE J. Sel. Topics Quantum Electron., 9(5):1132–1137. [doi:10.1109/JSTQE.2003.819518]

    Article  Google Scholar 

  • Hayakaw, A., Takabayashi, K., Tanaka, S., Tomabechi, S., Ekawa, M., Morito, K., 2006. Tunable Twin-Guide Distributed Feedback Laser with 8-nm Mode-Hop-Free Tuning Range. Lasers and Electro-Optics — Pacific Rim 2005, p.628–629. [doi:10.1109/CLEOPR.2005.1569528]

  • He, J.J., Lamontagne, B., Delage, A., Erickson, L., Davies, M., Koteles, E.S., 1998. Monolithic integrated wavelength demultiplexer based on a waveguide Rowland circle grating in InGaAsP/InP. J. Lightwave Technol., 16(4): 631–638. [doi:10.1109/50.664075]

    Article  Google Scholar 

  • Jayaraman, V., Mathur, A., Coldren, L.A., 1993. Theory, design, and performance of extended tuning range semiconductor lasers with sampled gratings. IEEE J. Quantum Electron., 29(6):1824–1834. [doi:10.1109/3.234440]

    Article  Google Scholar 

  • Kwon, O.K., Kim, J.H., Kim, K.H., Sim, E., Oh, K., 2006. Widely tunable multi-channel grating cavity laser. IEEE Photon. Technol. Lett., 18(16):1699–1701. [doi:10.1109/LPT.2006.879556]

    Article  Google Scholar 

  • Levin, L., 2002. Mode-hop-free electro-optically tuned diode laser. Opt. Lett., 27(4):237–239. [doi:10.1364/OL.27.000237]

    Article  Google Scholar 

  • Mroziewicz, B., Kowalczyk, E., Dobrzanski, L., Ratajczak, J., Lewandowski, S.J., 2007. External cavity diode lasers with E-beam written silicon diffraction gratings. Opt. Quantum Electron., 39(7):585–595. [doi:10.1007/s11082-007-9111-7]

    Article  Google Scholar 

  • Nunoya, N., Ishii, H., Kawaguchi, Y., Kondo, Y., Oohashi, H., 2008. Wideband tuning of tunable distributed amplification distributed feedback laser array. Electron. Lett., 44(3):205–207. [doi:10.1049/el:20083621]

    Article  Google Scholar 

  • Sheng, Z.Y., He, S., He, J.J., 2001. Simulation for etched diffraction grating by use of scalar diffraction theory. Opto-Electron. Eng., 28:29–32.

    Google Scholar 

  • Shi, Z.M., He, J.J., 2005. A hybrid diffraction method for the design of etched diffraction grating demultiplexers. J. Lightwave Technol., 23(3):1426–1430. [doi:10.1109/JLT.2005.843460]

    Article  Google Scholar 

  • Soole, J.B.D., Poguntke, K., 1992. Multistripe array grating integrated cavity laser: a new semiconductor laser for WDM application. Electron. Lett., 28(19):1805–1807. [doi:10.1049/el:19921151]

    Article  Google Scholar 

  • Weber, J.P., 1994. Optimization of the carrier-induced effective index change in InGsAsP waveguides—application to tunable Bragg grating. IEEE J. Quantum Electron., 30(8):1801–1816. [doi:10.1109/3.301645]

    Article  Google Scholar 

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Correspondence to Rui-xing Zeng.

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Project supported by the National Natural Science Foundation of China (No. 60788403) and the Fundamental Research Funds for the Central Universities of China

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Zeng, Rx., Wang, L. & He, Jj. Design and analysis of a mode-hop-free tunable laser based on etched diffraction grating. J. Zhejiang Univ. - Sci. C 11, 793–797 (2010). https://doi.org/10.1631/jzus.C0910622

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  • DOI: https://doi.org/10.1631/jzus.C0910622

Key words

  • Semiconductor laser
  • Integrated optics
  • Etched diffraction grating

CLC number

  • TN929.11