Evanescently coupled photodiodes integrating a double-stage taper for 40-Gb/s applications -: Compared performance with side-illuminated photodiodes

被引：31

作者：

Demiguel, S ^{[1
]}

Giraudet, L ^{[1
]}

Joulaud, L ^{[1
]}

Decobert, J ^{[1
]}

Blache, F ^{[1
]}

Coupé, V ^{[1
]}

Jorge, F ^{[1
]}

Pagnod-Rossiaux, P ^{[1
]}

Boucherez, E ^{[1
]}

Achouche, A ^{[1
]}

Devaux, F ^{[1
]}

机构：

[1] Alcatel Opto Labs, F-91460 Marcoussis, France

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2002年 / 20卷 / 12期

关键词：

40; Gb/s; beam propagation method (BPM); diluted waveguide; evanescent coupling; high-efficiency; high-speed; optical fiber; photodiode; taper;

D O I：

10.1109/JLT.2002.806752

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：

The design, fabrication, and performance of double-stage taper photodiodes (DSTPs) are reported. The objective of this work is to develop devices compatible with 40-Gb/s applications. Such devices require high efficiency, ultrawide band, high optical power handling capability, and compatibility with low-cost module fabrication. The integration of mode size converters improves both the coupling efficiency and the responsivity with a large fiber mode diameter. Responsivity of 0.6 A/W and 0.45 A/W are achieved with a 6-mum fiber mode diameter and cleaved fiber, respectively, providing relaxed alignment tolerances (+/-1.6 mum and +/-2 mum, respectively), compatible with cost-effective packaging techniques. DSTPs also offer a wide bandwidth greater than 40 GHz and transverse-electric/transverse-magnetic polarization dependence lower than 0.2 dB. Furthermore, a DSTP saturation current as high as 11 mA results in optical power handling greater than + 10 dBm and a high output voltage of 0.8 V. These capabilities allow the photo-diode to drive the decision circuit without the need of a broad-band electrical amplifier. The DSTP devices presented here demonstrate higher responsivities with large fiber mode diameter and better optical power handling capabilities and are compared with classical side-illuminated photodiodes.

引用

页码：2004 / 2014

页数：11

共 24 条

[11] MEASUREMENT OF ABSORPTION-COEFFICIENTS OF GA0.47IN0.53AS OVER THE WAVELENGTH RANGE 1.0-1.7-MU-M [J].