Waveguide and antenna coupled travelling-wave 1.55μm photodetectors for optical (sub)millimeter-wave generation

被引：7

作者：

Malcoci, A ^{[1
]}

Stöhr, A ^{[1
]}

Sauerwald, A ^{[1
]}

Schulz, S ^{[1
]}

Jäger, D ^{[1
]}

机构：

[1] Univ Duisburg Essen, ZHO Optoelektron, D-47057 Duisburg, Germany

来源：

MICROWAVE AND TERAHERTZ PHOTONICS | 2004年 / 5466卷

关键词：

TW-PD; InP; (sub-) millimetre wave astronomy; ALMA; cw THz generation; photomixing;

D O I：

10.1117/12.548966

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：

This paper will report on continuous (sub-)millimetre-wave (cw) generation by photomixing two laser signals at around 1.55mum in ultrafast InAlAs/InGaAs(P) travelling-wave photodetectors (TW-PD). At first TW-PD's are characterised up to 160GHz nun-wave frequency using conventional MMW equipment. Further, photonic THz transmitters with integrated planar slot and bow-tie antenna structures for quasi optical free space coupling will be presented. Resonant slot antenna coupled TW-PD exhibit sufficient power for replacing the 460GHz solid-state-LO of an SIS-based heterodyne receiver while the equivalent device with integrated bow-tie antenna operates in a very broadband frequency range between 20 and 620GHz. Next we report on waveguide coupled TW-PD's and show experimental results in a wide frequency range, up to 1THz. Finally, several low-cost strategies for enhancing the available power as well as the efficiency will be presented.

引用

页码：202 / 209

页数：8

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