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Analog performance of multiple-quantum-well electroabsorption modulator
- Authors
- Yun, Y.S.; Choi, Y.W.; Chung, J.D.; Kim, J.H.
- Issue Date
- Sep-2005
- Publisher
- SPRINGER
- Keywords
- nonlinearity; radio-on-fiber; traveling-wave electroabsorption modulator
- Citation
- OPTICAL AND QUANTUM ELECTRONICS, v.37, no.11, pp 1025 - 1031
- Pages
- 7
- Journal Title
- OPTICAL AND QUANTUM ELECTRONICS
- Volume
- 37
- Number
- 11
- Start Page
- 1025
- End Page
- 1031
- ISSN
- 0306-8919
1572-817X
- Abstract
- Linearity is an important property of optical devices in analog communication systems. In this paper, we study the 3rd-order intermodulation distortion (IMD3) of an InP/InGaAsP multiple-quantum-well (MQW) traveling-wave type electroabsorption modulator (TW-EAM). We observe that dips in the measured IMD3 results are different from those by general transfer curve of electroabsorption modulators (EAMs). In order to verify it, we analyse the phenomena by using the absorption coefficients according to a wavelength and a bias voltage. Thus, we can see that the dips result from the quantum-confined Stark effect (QCSE). We propose the method to enhance linearity of MQW-EAMs by using this effect in addition to the E/O response.
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