Huawei Technologies Co., Limited

Politecnico Di Milano

Guangcan Mi

Yanbo Li

Tianhai Chang

Xu Sun

Xin Zhang

Ruiqiang Ji

Francesco Morichetti

Benbo Xu

Zeshan Chang

Milanizadeh Maziyar

Zecen Zhang

Example optical signal processing apparatuses and methods are provided. One example apparatus includes: N light sources, a wavelength multiplexer, an optical processor, a dither application circuit, a first detection circuit, a second detection circuit, and a feedback control circuit. The light source generates a single-wavelength signal. The dither application circuit applies a dither signal to the light source. The wavelength multiplexer generates a multi-wavelength signal based on the single-wavelength signal. The first detection circuit is configured to obtain a first power signal of a signal input to the optical processor. The second detection circuit is configured to obtain a second power signal of a signal output from the optical processor. The feedback control circuit adjusts a working parameter of the optical processor based on the dither signal corresponding to the single-wavelength signal, the first power signal, and the second power signal.

Optical signal processing apparatus and method

An optical module is disclosed. The optical module includes a first downlink port, a second downlink port, a directional coupler, a optical attenuator, a first photodiode (PD), and a second PD. The directional coupler, connected to the first downlink port, is configured to receive a downlink optical signal. The second PD connected to the directional coupler, is configured to obtain a power value. If the power value is greater than a first threshold, the optical attenuator is configured to receive a attenuation control signal, and attenuate, based on the attenuation control signal, a power of an optical signal passing through the second downlink port. The first PD is configured to: convert the downlink optical signal into a downlink electrical signal, and convert the optical signal passing through the second downlink port into an electrical signal. Both the first downlink port and the second downlink port are connected to the first PD.

Optical module, data center system, and data transmission method

An optical transmitter, including a wavelength selector and a plurality of modulator groups, is proposed. Each modulator group includes a plurality of modulators, and operating wavelengths of any two modulators in each modulator group are different. The wavelength selector is configured to: obtain a first beam from a multi-wavelength light source, and generate a second beam based on the first beam, where the second beam includes some of the plurality of wavelengths of the first beam. A modulator in a modulator group of the plurality of modulator groups is configured to modulate to-be-sent data onto a wavelength in the second beam.

Optical transmitter and optical modulation method

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Shenzhen, China

Guangcan Mi