EML based on side-wall grating and identical epitaxial layer scheme

Lianping Hou, Mingming Tan, Mohsin Haji, Iain Eddie, John H. Marsh

    Research output: Contribution to journalArticlepeer-review


    We, for the first time, present electroabsorption modulator lasers based on side-wall gratings and the identical epitaxial layer scheme using very simple fabrication processes. The devices show stable single-mode operation with little mode-hopping and a side mode suppression ratio of more than 45 dB, which is maintained until the applied current exceeds 6 times that of the threshold value. The drive voltage required to obtain a 12-dB extinction ratio is-2V. The devices can be operated with a 3-dB bandwidth of 7 GHz allowing for error-free large signal modulation at 5 Gb/s with a dynamic extinction ratio of 11 dB.

    Original languageEnglish
    Article number6514055
    Pages (from-to)1169-1172
    Number of pages4
    JournalIEEE Photonics Technology Letters
    Issue number12
    Publication statusPublished - 14 Jun 2013


    • Distributed feedback (DFB) laser
    • electroabsorption modulator (EAM)
    • electroabsorption modulator integrated DBF laser (EML)
    • high extinction ratio (ER)
    • integrated laser modulator (ILM)
    • low drive voltage


    Dive into the research topics of 'EML based on side-wall grating and identical epitaxial layer scheme'. Together they form a unique fingerprint.

    Cite this