Monolithically integrated eight-channel WDM modulator with narrow channel spacing and high throughput

• Published in: IEEE journal of selected topics in quantum electronics Vol. 11; no. 1; pp. 43 - 49
• Main Authors: Suzaki, Y., Yasaka, H., Mawatari, H., Yoshino, K., Kawaguchi, Y., Oku, S., Iga, R., Okamoto, H.
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.01.2005; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Arrayed waveguide gratings; Arrays; Channel spacing; Channels; Diffraction gratings; Gratings (spectra); Modulators; Modules; Monolithic integrated circuits; Optical arrays; Optical crosstalk; Optical modulation; optical modulator; Optical transmitters; Optical waveguides; Semiconductor optical amplifiers; Stimulated emission; Throughput; Wavelength division multiplexing; wavelength division multiplexing (WDM)
• ISSN: 1077-260X; 1558-4542
• DOI: 10.1109/JSTQE.2004.841717

We demonstrate an eight-channel wavelength division multiplexing (WDM) modulator module that monolithically integrates arrayed waveguide gratings and semiconductor optical amplifiers and electroabsorption optical modulators arrays. The compact module can generate individual optical signals for each WDM channel with low optical and electrical crosstalk. We show two configurations for the narrow channel spacing of 25 GHz and high throughput of beyond 80 Gb/s. Combining this WDM modulator with a multi-wavelength light source is a promising approach to creating a compact WDM optical transmitter.