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

S Yu, L Hou, GB Ren, Y Shu

Research output: Contribution to journalArticle (Academic Journal)peer-review

5 Citations (Scopus)

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.
Translated title of the contributionAngled-facet spot-size-converter integrated semiconductor optical amplifiers using asymmetric twin waveguide technology
Original languageEnglish
Pages (from-to)563 - 565
Number of pages3
JournalIEEE Photonics Technology Letters
Volume20 (8)
DOIs
Publication statusPublished - Apr 2008

Bibliographical note

Publisher: IEEE

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