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- Title
All-optical flip-flop contrast enhancement based on bistable polarisation rotation within Fabry-Perót SOA.
- Authors
Ippolito, C. E.; Paranjpe, T.; Permeneva, D.; Maywar, D. N.
- Abstract
Switching-contrast enhancement of over 28 dB for all-optical flip-flop (AOFF) operation of a Fabry-Perót semiconductor optical amplifier (SOA) is experimentally demonstrated. Although the two stable flip-flop states of such a device are typically distinguished by their optical power, it is demonstrated that each stable state can also exhibit a unique state of polarisation (SOP). This bistable polarisation rotation (BPR) is leveraged to achieve extreme contrast enhancement by aligning the AOFF reset-state SOP to the blocking axis of a linear polariser, producing a contrast of 36.6 dB. This contrast-enhancement technique is applicable to other AOFFs based on resonant-type SOAs (RT-SOAs) and Kerr-nonlinear media, substantially improving their applicability to advanced photonic-switching applications.
- Subjects
FLIP-flop circuits; SEMICONDUCTOR optical amplifiers; OPTICAL polarization; POLARIZERS (Light); PHOTONIC switching systems; SEMICONDUCTOR lasers
- Publication
Electronics Letters (Wiley-Blackwell), 2014, Vol 50, Issue 22, p1620
- ISSN
0013-5194
- Publication type
Article
- DOI
10.1049/el.2014.3002