Accession Number : ADP007398

Title :   Frequency Conversion by Four-Wave Mixing in Semiconductor Laser Amplifiers: How to Relax the Filter Problem?

Corporate Author : HEINRICH-HERTZ-INST FUER NACHRICHTENTECHNIK BERLIN G M B H (GERMANY F R)

Personal Author(s) : Grobkopf, G. ; Ludwig, R. ; Schnabel, R. ; Schunk, N. ; Weber, H. G.

Report Date : 22 MAY 1992

Pagination or Media Count : 4

Abstract : In Ref.1 an all optical frequency conversion method was reported, which is based on nearly degenerate four-wave mixing (NDFWM) and homogeneous gain saturation in semiconductor laser amplifiers (SLA). This method promises a frequency conversion range up to about 10 THz (depending on the gain bandwidth of the SLA), a conversion efficiency n of more than 0 dB, the frequency conversion of a given data signal simultaneously to several frequencies and finally data transparency. However, it restricts the bit rate to < 1 Gbit/s. In two experiments a successful operation of this method was demonstrated 2, 3. A disadvantage of this frequency conversion method are the severe requirements on the resolution of the optical filter, which is necessary to select the converted data signal out of a multicomponent spectrum generated at the output of the SLA. In this paper we investigate how to relax the requirements on the selectivity of the optical filter.

Descriptors :   *FREQUENCY CONVERSION, *LASER AMPLIFIERS, BANDWIDTH, EFFICIENCY, FILTERS, GAIN, OPERATION, OPTICAL FILTERS, OUTPUT, RATES, REQUIREMENTS, RESOLUTION, SATURATION, SEMICONDUCTOR LASERS, SIGNALS, TRANSPARENCIES, GERMANY.

Subject Categories : Electrooptical and Optoelectronic Devices

Distribution Statement : APPROVED FOR PUBLIC RELEASE