Design of a spotsize-converter-integrated laser diode (SS-LD) with a lateral taper, thin-film core and ridge in the 1.3-mu m-wavelength region based on the 3-D BPM

被引：18

作者：

Kawano, K

Kohtoku, M

Wada, M

Okamoto, H

Itaya, Y

Naganuma, M

机构：

[1] NTT Opto-electronics Laboratories, Atsugi-Shi, Kanagawa Pref., 243-01

[2] Kyushu University, Fukuoka

[3] Musashino Elec. Commun. Laboratories, Nippon Telegraph and Telephone Corp., Tokyo

[4] Department of Physical Electronics, Tokyo Institute of Technology, Tokyo

[5] NTT Opto-electronics Laboratories, Kanagawa

[6] Waseda University, Tokyo

[7] Chiba University, Chiba

[8] Tokyo Institute of Technology, Tokyo

[9] Musashino Elec. Commun. Laboratory, Nippon Telegraph and Tel. Pub. Corp., Tokyo

[10] Atsugi Elec. Commun. Laboratory, Nippon Telegraph and Tel. Corp., Kanagawa

[11] Integrated Optics Group, Heinrich Hertz Institute, Berlin

[12] Inst. Electronics, Info.

来源：

IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS | 1996年 / 2卷 / 02期

关键词：

D O I：

10.1109/2944.577394

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In order to develop spotsize-converter-integrated laser diodes (SS-LD's) with high efficiency and large-misalignment tolerances in the 1.3-mu m-wavelength region, spotsize converters (SSC's), which consist of a lateral taper, thin-film core and ridge, are investigated employing the three-dimensional (3-D) semivectorial finite-difference beam propagation method (FD-BPM) with nonequidistant discretization, The sum of the spot-conversion loss and coupling loss between the laser diode (LD) eigenmode and the single-mode fiber (SMF) eigenmode are calculated for various structural parameters, Small loss of around 1.5 dB can be achieved by introducing a nonlinear taper, The fabrication tolerances for the SSC's are also clarified. The calculated results agree well with the results for actually fabricated SS-LD's, It is also shown that the radiation loss and coupling characteristics of the SS-LD's with a buried thin-film core structure can be improved using a nonlinear taper.

引用

页码：348 / 354

页数：7

共 22 条

[1] INP-BASED MULTIPLE-QUANTUM-WELL LASERS WITH AN INTEGRATED TAPERED BEAM EXPANDER WAVE-GUIDE [J].