Experimental verification of optimum filter bandwidths in direct-detection (N)RZ receivers limited by optical noise

Author

Strasser, M.M. ; Pfennigbauer, M. ; Pauer, M. ; Winzer, P.J.

Author_Institution

Inst. fur Nachrichtentech. und Hochfrequenztech., Technische Univ. Wien, Austria

Volume

2

fYear

2001

fDate

2001

Firstpage

485

Abstract

We present measurements performed at a data rate of 10 Gb/s to experimentally verify these theoretical results. In the case of RZ coding we reached a sensitivity of 52 photons per bit (ppb) at a bit-error ratio BER = 10^-9, which is about 1.4dB above the quantum limit. To the best of our knowledge, at 10Gb/s, this result is the best previously reported sensitivity for optically preamplified on-off-keying (OOK). The (N)RZ transmitter consisted of a DFB laser with an integrated electroabsorption modulator

Keywords

Gaussian noise; amplitude shift keying; distributed feedback lasers; electro-optical modulation; electroabsorption; integrated optoelectronics; optical filters; optical noise; optical receivers; optical transmitters; optimisation; sensitivity; 10 Gbit/s; DFB laser; OOK; bit-error ratio; data rate; direct-detection RZ receivers; experimental verification; integrated electroabsorption modulator; optical noise; optically preamplified on-off-keying; optimum filter bandwidths; quantum limit; sensitivity; transmitter; Bandwidth; Bit error rate; High speed optical techniques; Optical filters; Optical network units; Optical noise; Optical receivers; Optical sensors; Optical signal processing; Optical transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Society, 2001. LEOS 2001. The 14th Annual Meeting of the IEEE

Conference_Location

San Diego, CA

ISSN

1092-8081

Print_ISBN

0-7803-7105-4

Type

conf

DOI

10.1109/LEOS.2001.968884

Filename

968884