US 2007/0183710 A1 · Device for temporal subsampling of an otdm optical signal, otdm-wdm converter comprising same and otdm-wdm converter

Abstract

The invention concerns a device for temporal subsampling of an OTDM optical signal at a predetermined subsampling frequency, comprising a generator (10) for generating clock pulses transmitted at the predetermined subsampling frequency and at a conversion wavelength λH and a wavelength converter device (16) adapted to receive at its input the OTDM optical signal and the clock pulses in order to deliver at its output a subsampled OTDM optical signal at the conversion wavelength. The converter device comprises a linear optical amplifier (18) adapted to receive the OTDM optical signal and the clock pulses propagating in the opposite direction, the maximum linear power of the conversion being adjusted so that it can be less than the peak power of the OTDM optical signal, and a converter (20) of phase modulation into amplitude modulation.

Claims12

Dependent claims

A converter for converting an OTDM type optical signal into a WDM type optical signal, characterized in that it comprises a plurality of devices connected in parallel for temporally subsampling the OTDM type optical signal at a predetermined subsampling frequency, each temporal subsampling device comprising:

a generator for generating clock pulses transmitted at the predetermined subsampling frequency and at a conversion wavelength specific to the subsampling device, and
a wavelength converter device adapted to receive at its input the OTDM type optical signal and the clock pulses at the conversion wavelength specific to the subsampling device in order to supply at its output a subsampled signal of the optical signal at the conversion wavelength, the converter device comprising:
a linear optical amplifier adapted to receive the OTDM type optical signal and the clock pulses propagating in the opposite direction, the maximum linear power of the amplifier being adjusted so that it can be less than the peak power of the OTDM type optical signal, and
a phase modulation to amplitude modulation converter.

1 more element

A converter for converting a WDM type optical signal into an OTDM type optical signal, the WDM type optical signal consisting of a plurality of wavelength-division multiplexed optical signals each transmitted at a wavelength specific to it, characterized in that it comprises:

a generator for generating a continuous wave signal transmitted at a predetermined conversion wavelengths, and
a plurality of wavelength converter devices in parallel, each converter device being adapted to receive at its input the continuous wave signal and one of the wavelength-division multiplexed optical signals in order to supply at its output an OTDM type optical signal transmitted at a temporal frequency that is a multiple of the common frequency of the wavelength-division multiplexed optical signals, each converter device comprising:
a linear optical amplifier adapted to receive the continuous wave optical signal and the wavelength-division multiplexed optical signal propagating in the opposite direction, the maximum linear power of the amplifier being adjusted so that it can be less than the peak power of the wavelength-division multiplexed optical signal, and
a phase modulation to amplitude modulation converter, and
a plurality of time shifter devices each associated with a specific converter device.

2 more elements

Dependencies are inferred from the claim text.

Device for temporal subsampling of an otdm optical signal, otdm-wdm converter comprising same and otdm-wdm converter

Life of this patent

Device for temporal subsampling of an otdm optical signal, otdm-wdm converter comprising same and otdm-wdm converter

Life of this patent

Abstract

Claims12