公开(公告)号：ITTO921016D0

公开(公告)日：1992-12-17

申请号：ITTO921016

申请日：1992-12-17

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： CAVACIUTI ALESSANDRO ,  PULEO MARIO

IPC: H01S5/06 ,  H01S5/50 ,  H04B10/291 ,  H04B10/50 ,  G02F1/05

公开(公告)号：DE69327365T2

公开(公告)日：2000-05-25

申请号：DE69327365

申请日：1993-05-24

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： CAVACIUTI ALESSANDRO ,  PULEO MARIO

IPC: H01S5/50 ,  H04J14/08 ,  H01S3/25

Abstract: Optical demultiplexing system, wherein from an optical carrier modulated by a TDM data flow the wanted tributary is extracted as an optical signal. The system makes use of a semiconductor optical amplifier, whose gain is modulated due to saturation effect. The amplifier receives both the modulated optical carrier and one or a plurality of sampling optical carriers, with wavelengths different from that of the modulated carrier. One or a plurality of optical filters supply at the output the tributaries by extracting from the amplifier output the sampling carriers modulated by data signals.

公开(公告)号：DE572890T1

公开(公告)日：1994-07-28

申请号：DE93108342

申请日：1993-05-24

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： CAVACIUTI ALESSANDRO ,  PULEO MARIO

IPC: H01S5/50 ,  H04J14/08 ,  H01S3/25

Abstract: Optical demultiplexing system, wherein from an optical carrier modulated by a TDM data flow the wanted tributary is extracted as an optical signal. The system makes use of a semiconductor optical amplifier, whose gain is modulated due to saturation effect. The amplifier receives both the modulated optical carrier and one or a plurality of sampling optical carriers, with wavelengths different from that of the modulated carrier. One or a plurality of optical filters supply at the output the tributaries by extracting from the amplifier output the sampling carriers modulated by data signals.

公开(公告)号：CA2096771A1

公开(公告)日：1993-11-27

申请号：CA2096771

申请日：1993-05-21

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： CAVACIUTI ALESSANDRO ,  PULEO MARIO

IPC: H01S5/50 ,  H04J14/08

Abstract: Optical demultiplexing system, wherein from an optical carrier modulated by a TDM data flow the wanted tributary is extracted as an optical signal. The system makes use of a semiconductor optical amplifier, whose gain is modulated due to saturation effect. The amplifier receives both the modulated optical carrier and one or a plurality of sampling optical carriers, with wavelengths different from that of the modulated carrier. One or a plurality of optical filters supply at the output the tributaries by extracting from the amplifier output the sampling carriers modulated by data signals.

公开(公告)号：ITTO920443D0

公开(公告)日：1992-05-26

申请号：ITTO920443

申请日：1992-05-26

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： CAVACIUTI ALESSANDRO ,  PULEO MARIO

IPC: H01S5/50 ,  H04J14/08

Abstract: Optical demultiplexing system, wherein from an optical carrier modulated by a TDM data flow the wanted tributary is extracted as an optical signal. The system makes use of a semiconductor optical amplifier, whose gain is modulated due to saturation effect. The amplifier receives both the modulated optical carrier and one or a plurality of sampling optical carriers, with wavelengths different from that of the modulated carrier. One or a plurality of optical filters supply at the output the tributaries by extracting from the amplifier output the sampling carriers modulated by data signals.

公开(公告)号：DE69327365D1

公开(公告)日：2000-01-27

申请号：DE69327365

申请日：1993-05-24

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： CAVACIUTI ALESSANDRO ,  PULEO MARIO

IPC: H01S5/50 ,  H04J14/08 ,  H01S5/40

Abstract: Optical demultiplexing system, wherein from an optical carrier modulated by a TDM data flow the wanted tributary is extracted as an optical signal. The system makes use of a semiconductor optical amplifier, whose gain is modulated due to saturation effect. The amplifier receives both the modulated optical carrier and one or a plurality of sampling optical carriers, with wavelengths different from that of the modulated carrier. One or a plurality of optical filters supply at the output the tributaries by extracting from the amplifier output the sampling carriers modulated by data signals.

公开(公告)号：CA2096771C

公开(公告)日：1998-07-14

申请号：CA2096771

申请日：1993-05-21

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： CAVACIUTI ALESSANDRO ,  PULEO MARIO

IPC: H01S5/50 ,  H04J14/08

Abstract: An optical demultiplexing system enables a wanted channel to be extracted as an optical signal from an optical carrier modulated by a TDM data flow. The system makes use of a semiconductor optical amplifier, whose gain is modulated by saturation effect. The amplifier receives both the modulated optical carrier and one or more sampling optical carriers, with wavelengths different from that of the modulated carrier. One or more optical filters extract from the amplifier output the sampling carrier or carriers modulated by the wanted data signal or signals.

公开(公告)号：CA2111642A1

公开(公告)日：1994-06-18

申请号：CA2111642

申请日：1993-12-16

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： CAVACIUTI ALESSANDRO ,  PULEO MARIO

IPC: H01S5/06 ,  H01S5/50 ,  H04B10/291 ,  H04B10/50 ,  H04B10/18

Abstract: A laser device, if directly amplitude modulated, exhibits an unwanted frequency modulation which broadens its emission spectrum. The unwanted frequency modulation is eliminated by carrying out a conversion of the modulated optical signal wavelength, using a semiconductor optical amplifier as a converter and another nonmodulated laser as a conversion signal generator. Wavelength conversion takes place in the amplifier due to gain modulation induced by saturation. An output signal at the conversion signal frequency, taken from a filter following the converter, presents an amplitude modulation equal and opposite to that of the modulated signal at input, but does not show frequency modulation.