Abstract

We suggest and experimentally demonstrate a method for increasing the tunable rf phase shift of semiconductor waveguides while at the same time enabling control of the rf power. This method is based on the use of slow- and fast-light effects in a cascade of semiconductor optical amplifiers combined with the use of spectral filtering to enhance the role of refractive index dynamics. A continuously tunable phase shift of 240° at a microwave frequency of 19GHz is demonstrated in a cascade of two semiconductor optical amplifiers, while maintaining an rf power change of less than 1.6dB. The technique is scalable to more amplifiers and should allow realization of an rf phase shift of 360°.

© 2009 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
The role of optical filtering in microwave phase shifting

Seán Ó Dúill, Evgeny Shumakher, and Gadi Eisenstein
Opt. Lett. 35(13) 2278-2280 (2010)

Fully tunable 360° microwave photonic phase shifter based on a single semiconductor optical amplifier

Juan Sancho, Juan Lloret, Ivana Gasulla, Salvador Sales, and José Capmany
Opt. Express 19(18) 17421-17426 (2011)

Enhancing light slow-down in semiconductor optical amplifiers by optical filtering

Weiqi Xue, Yaohui Chen, Filip Öhman, Salvador Sales, and Jesper Mørk
Opt. Lett. 33(10) 1084-1086 (2008)

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 OSA member, or as an authorized user of your institution.

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

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

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

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

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

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

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