InP AAC for data compression applications. Issue 2 (1st April 2019)

• Record Type: Journal Article
• Authors: Pinho, Cátia; Neto, Berta; Morgado, Tiago; Neto, Hugo; Lima, Mário; Teixeira, António
• Is Part Of: IET optoelectronics. Volume 13:Issue 2(2019)
• Page Start: 67
• Page End: 71
• Publication Date: 2019-04-01
• Subjects: data compression -- phase modulation -- optical modulation -- III-V semiconductors -- photodetectors -- indium compounds -- phase control -- optical couplers -- integrated optics -- image coding -- Haar transforms -- optical tuning; InP -- phase modulators -- photodetectors -- lasers -- tuning properties -- high-quality active components -- output ports -- InP PIC -- InP AAC -- data communications -- high processing computing -- Fraunhofer Gesellschaft Heinrich Hertz Institute design toolkit -- low footprint structure design -- experimental coupling ratios -- tunable behaviour -- incoming input signals -- image compression -- Haar transform network -- all-optical data processing -- tunable power applications -- 2 × 2 asymmetric adiabatic coupler indium phosphide photonic integrated circuit -- data compression applications; Optoelectronics -- Periodicals; 621.36
• DOI: 10.1049/iet-opt.2018.5084
• Languages: English
• ISSNs: 1751-8768

Abstract

Abstract : The authors propose a 2 × 2 asymmetric adiabatic coupler (AAC) indium phosphide (InP) photonic integrated circuit (PIC), suitable for tunable power applications such as all‐optical data processing. The device was idealised as the key building block in Haar transform network used for image compression, allowing to perform the necessary separate addition and subtraction of incoming input signals at its output ports. The tunable behaviour of the coupler was demonstrated experimentally for addition/subtraction and splitting (with experimental coupling ratios of 77:23/14:86 and 50:50, respectively) through phase control. The use of the developed InP PIC enables a low footprint structure design together with the high‐quality active components (lasers, photodetectors and phase modulators) of Fraunhofer Gesellschaft Heinrich Hertz Institute design toolkit. The proposed study provides a full experimental characterisation of the AAC, exploring its tuning properties and enabling further usage in a plethora of applications in high processing computing and data communications.