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
收藏
页码:202 / 209
页数:8
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