Measurement of small chirp-parameter for Mach-Zehnder-type optical modulator
详细信息 查看全文
- 作者：Akira Enokihara ; Tetsuya Kawanishi ; Hiroshi Murata ; Yasuyuki Okamura ; Masayuki Izutsu
- 关键词：Optical modulator ; Chirp-parameter ; Mach-Zehnder interferometer ; Optical spectrum
- 刊名：Optics Communications
- 出版年：2009
- 出版时间：1 November 2009
- 年：2009
- 卷：282
- 期：21
- 页码：4229-4232
- 全文大小：420 K
文摘
A new measurement method of chirp-parameters is proposed for electro-optic (EO) intensity modulators with the Mach-Zehnder (MZ) waveguide interferometer. This method is suitably applied for the measurement of the small chirp with operation at a specific RF-frequency. To determine the chirp-parameter, optical spectrum components of the modulated light are observed with varying the relative optical phase difference between the two arms of the MZ waveguide interferometer. The chirp-parameter of 0.17, which is a value small enough for EO intensity modulation, was successfully measured by the experiment.