Angled-facet spot-size-converter integrated semiconductor amplifier using asymmetric twin waveguide technology

Hou, L. , Ren, Z. and Shu, Y. (2008) Angled-facet spot-size-converter integrated semiconductor amplifier using asymmetric twin waveguide technology. IEEE Photonics Technology Letters, 20(8), pp. 563-565. (doi: 10.1109/LPT.2008.918860)

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Abstract

The extinction ratio (defined as the difference in the optical power between 0-dB fiber-to-fiber loss and the off state level) is enhanced with the introduction of an S-bend waveguide structure using asymmetric twin waveguide techniques for a spot-size converter integrated semiconductor optical amplifier (SSC-SOA) with a polarization-insensitive offset superlattice. Angled waveguides are introduced in order to obtain low facet reflectivity without the need for antireflection coating. A curved waveguide is introduced to connect the angled and straight waveguide, minimizing their coupling loss while achieving a lateral spatial mode filter. The SSC-SOA, operating at 1.62-mum wavelength, achieves an extinction ratio up to 70 dB and a fiber-to-fiber gain of 10 dB using cleaved, flat end single-mode optical fibers.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Hou, Dr Lianping
Authors: Hou, L., Ren, Z., and Shu, Y.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:IEEE Photonics Technology Letters
Publisher:IEEE
ISSN:1041-1135
ISSN (Online):1941-0174
Published Online:14 March 2008

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