Factorizable state-space model for active optical filter structures with two-port couplers
Applied Optics, Vol. 47, Issue 17, pp. 3185-3195 (2008)
http://dx.doi.org/10.1364/AO.47.003185
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Abstract
A state-space model (SSM) is developed for an integrated photonic architecture. This particular architecture is composed of two-port couplers and current-controllable semiconductor optical amplifiers (gains) fabricated on the same substrate. This device architecture leads to a new type of lattice filter structure. The SSM is shown to be factorizable into two matrices, one containing structural parameters of the two-port couplers, which are set during manufacturing, and the other containing the tunable gains. The SSM provides a systematic and practical approach to the analysis of the underlying filter structure, which can be easily extended to multiple-input, multiple-output optical filter structures with or without adjustable gains using two- or four-port couplers. A novel method of using the gains as loss compensation elements in addition to their tunable roles is developed.
© 2008 Optical Society of America
OCIS Codes
(070.1170) Fourier optics and signal processing : Analog optical signal processing
(250.5300) Optoelectronics : Photonic integrated circuits
(070.2025) Fourier optics and signal processing : Discrete optical signal processing
(130.7408) Integrated optics : Wavelength filtering devices
ToC Category:
Integrated Optics
History
Original Manuscript: September 17, 2007
Revised Manuscript: April 16, 2008
Manuscript Accepted: May 12, 2008
Published: June 4, 2008
Citation
Issa Panahi and Govind Kannan, "Factorizable state-space model for active optical filter structures with two-port couplers," Appl. Opt. 47, 3185-3195 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-17-3185
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