All-fibre optical hybrid for coherent polarisation diversity receivers

Delavaux, Jean-Marc; Park, Y.K.; Barski, S.; Lefèvre, Hervé; Failes, M.; Warner, Charles Dudley

doi:10.1049/el:19900838

Cited by 7 publications

(7 citation statements)

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“…All-fiber hybrids offer excellent insertion losses of 0.2-0.7 dB and ultra-low reflection, but they show weak polarization-extinction ratios of around 15 dB. It is illustrative for fiber-optics, that both reported hybrids were immediately used in system experiments [18], [21], and were available either as samples or as a product. The critical component in the fused-fiber hybrid is the polarization splitter [19].…”

Section: B All-fibermentioning

confidence: 97%

“…All-fiber polarization-diversity hybrids, as shown in Fig. 8, have been fabricated by AT&T [18], using side-polishing techniques, and by Daimler-Benz [20], using fused-fiber tech- nology. All-fiber hybrids offer excellent insertion losses of 0.2-0.7 dB and ultra-low reflection, but they show weak polarization-extinction ratios of around 15 dB.…”

Section: B All-fibermentioning

confidence: 99%

“…The critical component in the fused-fiber hybrid is the polarization splitter [19]. Usable bandwidths are 17 nm for the fused-fiber technology [20] and over 100 nm for the side-polishing technique [18]. The side polishing technique, however, may show serious reliability problems due to aging of the epoxy which forms the coupling layer between both fibers.…”

Section: B All-fibermentioning

confidence: 99%

See 2 more Smart Citations

Integrated-optic versus microoptic devices for fiber-optic telecommunication systems: a comparison

Pennings

Khoe

Smit

et al. 1996

IEEE J. Select. Topics Quantum Electron.

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Section: B All-fibermentioning

confidence: 97%

Section: B All-fibermentioning

confidence: 99%

Section: B All-fibermentioning

confidence: 99%

See 1 more Smart Citation

Integrated-optic versus microoptic devices for fiber-optic telecommunication systems: a comparison

Pennings

Khoe

Smit

et al. 1996

IEEE J. Select. Topics Quantum Electron.

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“…Whereas, in the past, polarization diversity hybrids were assembled using separate components, the drive for cost and size reduction has stimulated a trend toward either all-fiber [2], [3], monolithically integrated [4]- [9], or completely micro-optical [lo]-[ 151 polarization diversity hybrids. All-fiber hybrids [2], [3] offer low losses (0.2-0.6 dB), but polarization extinction ratios are weak (typ. 15 dB) and reliability problems may be encountered.…”

Section: Introductionmentioning

confidence: 99%

Ultra fabrication-tolerant fully packaged micro-optical polarization diversity hybrid

Pennings

Schouten

Khoe

et al. 1995

J. Lightwave Technol.

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Abstract-We report on a novel fully packaged micro-optical polarization diversity hybrid, which shows excellent performance in combination with large fabrication and assembly tolerances. Our novel design employs highly parallel glass plates, which results in parallel and equidistant input and output beams. Critical fabrication and alignment procedures are thus avoided. At the target wavelength of 1.55 pm, typical fiber-to-fiber insertion loss is 0.7 dB, balancing is 50 f3%, polarization extinction ratios are better than 25 dB, and measured optical back reflection is smaller than -58 dB. Wavelength insensitive behavior has been observed, resulting in a wide usable spectral operating range in excess of 90 nm. The micro-optical hybrid has been successfully tested in a dual-balanced polarization-diversity coherent CPFSK transmission experiment at 2.5 Gbt/s.

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“…Low excess losses of < 0.6 dB have been obtained with all-fiber hybrids, e.g. comprising TE/TM-splitter couplers and power splitters made with 'PANDA' polarization-maintaining fiber (PMF), using the side polishing technique [4].…”

Section: Introductionmentioning

confidence: 99%

All-Fiber Optical Frontend for a Balanced Polarization Diversity Receiver with 0.2 dB Excess Loss and High Noise Rejection

Deufel¹,

Eisenmann²,

Gottsmann³

et al. 1993

Journal of Optical Communications

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We present an optical frontend for a polarization diversity receiver comprising an all-fiber hybrid and monolithic pin-photodiode pairs. The coupler hybrid consists of fused biconic TE/TM-splitters and a power splitter. Its excess loss is as low as 0.2 dB, and the polarization extinction is better than -17 dB in a 20 nm wavelength window. The photodiode pairs are grown on a semi-insulating substrate. The fiber-photodiode interfacing technique is based on self-aligned fiber positioning in grooved silicon chips. By simple adjustment the excess noise rejection of -46 dB up to 1 GHz is achieved.

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All-fibre optical hybrid for coherent polarisation diversity receivers

Cited by 7 publications

References 0 publications

Integrated-optic versus microoptic devices for fiber-optic telecommunication systems: a comparison

Integrated-optic versus microoptic devices for fiber-optic telecommunication systems: a comparison

Ultra fabrication-tolerant fully packaged micro-optical polarization diversity hybrid

All-Fiber Optical Frontend for a Balanced Polarization Diversity Receiver with 0.2 dB Excess Loss and High Noise Rejection

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