Bit error evaluation of optically preamplified direct detection receivers with Fabry-Perot optical filters
نویسندگان
چکیده
منابع مشابه
Bit Error Evaluation of Optically Preamplified Direct Detection Receivers with Fabry–Perot Optical Filters
The error performance of a preamplified, direct detection receiver with an optical filter of the Lorentzian type is studied. The analysis takes into account the influence of the optical intersymbol interference (ISI). A closed-form expression of the moment generating function (MGF) of the decision variable is derived. Error probabilities are evaluated from the MGF using a saddlepoint approximat...
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The design, fabrication and measured characteristics of micromachined FabryPerot (F-P) optical filters for the visible spectral range are presented. Silver films of 40-50 nm thickness, evaporated on a 300 nm thick low-stress silicon nitride membrane, are used as high-quality mirrors. Two parallel mirrors, with a square aperture of up to 2x2 mm and initial cavity gap of 1.2 μm, form a tunable Fa...
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We analytically obtain the exact fundamental limit of 4-level amplitude shifted keying formats (4ASK) with direct detection optically preamplified receivers. The optimum multilevel spacing and the corresponding decision thresholds, which depend both on the signal to noise ratio and optical bandwidth, are obtained numerically considering the Chi-squared distribution of each level. The quantum li...
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A Fabry-Perot etalon placed in the object plane of a coherent optical processing system can be used as a variable bandpass preprocessing filter. Use of this filter leads to improved correlation signals in a matched spatial filter system. Experimental results are shown and compared with results obtained by two other preprocessing methods.
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A new Gaussian approximation (GA) which takes into account the influence of arbitrary optical and electrical filters is proposed for the performance evaluation of optically preamplified receivers. Using the new GA, the receiver sensitivity is evaluated and notable performance differences were observed for several Fabry-Perot optical filters.
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ژورنال
عنوان ژورنال: Journal of Lightwave Technology
سال: 1997
ISSN: 0733-8724
DOI: 10.1109/50.618388