Abstract

A wavelength-tunable optical add/drop filter with four channels 1.6 nm apart (corresponding to 200 GHz) for wavelength division multiplexing applications at 1550 nm was realized. The filter is based on a resonant coupler design in a so-called add-after-drop configuration with separate subdevices for the add and drop functions, thereby minimizing the homo-wavelength crosstalk between the add and drop ports. The device was realized using a novel high-refractive-index-contrast planar SiON waveguide technology enabling low-loss bends with a radius of curvature of only 1.5 mm. The device can be tuned over the full free spectral range of 6.4 nm by using the thermo-optic effect. The on-chip losses of the 75-mm-long filter are about −3.5 dB. The wavelength channel isolation is better than 27 dB and the polarization dependence is negligible with measured values for the TE-TM shift of less than 0.1 nm.

© 1999 Optical Society of America

PDF Article
More Like This
A wavelength tunable semiconductor amplifier/filter for add/drop demultiplexing in WDM networks

G. Raybon, U. Koren, R. M. Jopson, B. I. Miller, M. Chien, M. G. Young, R. J. Capik, and K. Dreyer
IME5 Integrated Photonics Research (IPR) 1996

Tunable optical add/drop filter

B. Glance
TuQ3 Optical Fiber Communication Conference (OFC) 1995

Integrated Reconfigurabie Optical Wavelength Add-Drop Multiplexer

M. P. Earnshaw and J. B. D. Soole
PD2 Integrated Photonics Research (IPR) 2002

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription