First demonstration of novel active multi-mode interferometer (MMI) LDs integrated with 1st order-mode permitted waveguides

Kiichi Hamamoto, Jan De Merlier, Masaki Ohya, Kazuhiro Shiba, Koichi Naniwae, Shinya Sudo, Tatsuya Sasaki

Research output: Contribution to journalArticle

17 Citations (Scopus)


Here we propose novel active multi-mode-interferometer (MMI) laser diodes (LDs) for 14XX nm fiber amplifier pump applications. The waveguide of the LDs is consisted from 1x1-MMI couplers integrated with 1st order-mode permitted waveguides to enhance the total active area. Although there is no single-mode waveguide region inside the cavity, the novel active MMI-LDs emitted in stable singletransverse-mode output up to maximum output power. Moreover, they achieved high output power of 1.46 W, and low driving voltage of only 1.75 V at 1 W output power.

Original languageEnglish
Pages (from-to)399-403
Number of pages5
JournalIEICE Electronics Express
Issue number13
Publication statusPublished - Jun 2005
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this