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Dive into the research topics where Rainer Fritschi is active.

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Featured researches published by Rainer Fritschi.


IEEE Photonics Technology Letters | 1992

Analog video distribution system with three cascaded 980 nm single-pumped EDFA's and 73 dB power budget

Henning Bülow; Rainer Fritschi; Rolf Heidemann; Bernhard Junginger; Heinz Krimmel; Jürgen Otterbach

A FTTH (fiber to the home)-system for 35 AM-VSB (amplitude modulation vestigial sideband) PAL TV-signals is presented with three cascaded EDFAs (erbium-doped fiber amplifiers) single-pumped with commercially available 980 nm semiconductor laser diodes, with only one optical isolator per amplifier and without any optical filter. This EDFA design leads to an optical distribution system that is cost competitive as compared to coax solutions. The high-optical output power (+13 dBm) in conjunction with the low noise performance (max NF=4.5 dB) allows a 73-dB power budget for a weighted video signal to noise ratio of 45 dB. A high split count of 4*32*64*64=524288 subscribers is realized.<<ETX>>


Archive | 1994

Optical coupler and amplifier

Rolf Rossberg; Rainer Fritschi; Jürgen Otterbach; Rolf Heidemann


Archive | 1994

Fiber optical amplifier having a detector for measuring scattered light at a splice

Bernhard Junginger; Rainer Fritschi; Heinz Krimmel


Electronics Letters | 2001

Transmission of 32 ETDM channels at 40 Gbit/s (1.28 Tbit/s capacity) over 3/spl times/100 km of TeraLight/sup TM/ fibre

S. Bigo; E. Lach; Y. Frignac; D. Hamoir; P. Sillard; W. Idler; S. Gauchard; Alain Bertaina; S. Borne; Laurence Lorcy; N. Torabi; Bernd Franz; Pascale Nouchi; P. Guenot; L. Fleury; G. Wien; G. Le Ber; Rainer Fritschi; Bernhard Junginger; M. Kaiser; Dominique Bayart; G. Veith; Jean-Pierre Hamaide; J.L. Beylat


Archive | 1997

Active demarcation point of an access network

Heinz Krimmel; Rainer Fritschi; Rolf Heidemann


Electronics Letters | 1992

4.2 million subscribers with cascaded EDFA-distribution system for 35 TV AM-VSB channels

Henning Bülow; Rainer Fritschi; Rolf Heidemann; Bernhard Junginger; Heinz Krimmel; Jürgen Otterbach


Archive | 1997

Active interface for an access network

Rainer Fritschi; Rolf Heidemann; Heinz Krimmel


Archive | 1994

Fiber optic amplifier.

Bernhard Junginger; Rainer Fritschi; Heinz Krimmel


Archive | 2003

Optical transmitter with linearising termination network

Heinz Krimmel; Rainer Fritschi; Jürgen Otterbach


Archive | 1997

Tuner for multi frequency signal reception

Heinz Dipl Ing Krimmel; Hardy Halbauer; Rainer Fritschi; Bernhard Junginger

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