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

doi:10.1587/elex.2.399

LETTER

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

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

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Keywords: active MMI-LD, single-transverse-mode, high power, low driving voltage, low power consumption

JOURNAL FREE ACCESS

2005 Volume 2 Issue 13 Pages 399-403

DOI https://doi.org/10.1587/elex.2.399

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Abstract

Here we propose novel active multi-mode-interferometer (MMI) laser diodes (LDs) for 14XXnm fiber amplifier pump applications. The waveguide of the LDs is consisted from 1x1-MMI couplers integrated with 1^st 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 single-transverse-mode output up to maximum output power. Moreover, they achieved high output power of 1.46W, and low driving voltage of only 1.75V at 1W output power.

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