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Bandwidth enhancement of traveling-wave photodetector by impedance mismatch
- Issue Date
- May-2003
- Publisher
- INST PURE APPLIED PHYSICS
- Keywords
- TWPD; FDTD; impedance mismatch; bandwidth enhancement; internal reflection
- Citation
- JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, v.42, no.5A, pp 2711 - 2714
- Pages
- 4
- Journal Title
- JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS
- Volume
- 42
- Number
- 5A
- Start Page
- 2711
- End Page
- 2714
- ISSN
- 0021-4922
- Abstract
- In this paper, we report bandwidth enhancement phenomena of traveling-wave photodetectors (TWPDs) by output impedance mismatch with an open input facet. The impulse response obtained by the extended finite difference time domain (FDTD) method shows that internal reflection of microwaves with a negative reflection coefficient at the load enlarges the bandwidth of TWPDs.
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