Traveling-wave photodetector for 1.55 μm wavelength fabricated with unitraveling-carrier photodiodes

被引：11

作者：

Hirota, Y ^{[1
]}

Hirono, T ^{[1
]}

Ishibashi, T ^{[1
]}

Ito, H ^{[1
]}

机构：

[1] NTT Corp, Photon Labs, Atsugi, Kanagawa 2430198, Japan

来源：

APPLIED PHYSICS LETTERS | 2001年 / 78卷 / 24期

关键词：

D O I：

10.1063/1.1377849

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report on a periodic traveling-wave photodetector (P-TW-PD) fabricated by unicarrier traveling photodiodes (UTC-PDs). It is comprised of three UTC-PDs periodically arranged along a coplanar waveguide transmission line. The photoresponse of the P-TW-UTC-PD is three times that of a single UTC-PD. A 3 dP bandwidth (f(3dB)) of 115 GHz at 1.55 mum was observed in a P-TW-UTC-PD with a terminal resistor located at the input end. This value of f(3dB) is almost the same as that observed in a single UTC-PD. In P-TW-UTC-PDs with no terminal resistor, the 3 dB bandwidth degrades to 56 GHz as a result of the reflection of backward-propagating microwaves at the input end. We conclude that our P-TW-UTC-PD provides velocity matching between electrical and optical waves. (C) 2001 American Institute of Physics.

引用

页码：3767 / 3769

页数：3

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