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公开(公告)号：EP4106229A1
公开(公告)日：2022-12-21
申请号：EP21767577.6
申请日：2021-03-04
发明人： MI, Guangcan , JI, Ruiqiang , CHANG, Zeshan
IPC分类号： H04B10/25
摘要： Embodiments of this application disclose an optical module, applied to the field of optical network communication. The optical module in this application includes a first downlink port, a second downlink port, a directional coupler, a first optical attenuator, a first photodiode PD, and a second PD. The directional coupler is connected to the first downlink port, and is configured to receive a first downlink optical signal. The second PD is connected to the directional coupler, and is configured to obtain a first power value. If the first power value is greater than a first threshold, the first optical attenuator is configured to receive a first attenuation control signal, and attenuate, based on the first attenuation control signal, a power of an optical signal passing through the second downlink port. The first PD is configured to: convert the first downlink optical signal into a first 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. Therefore, connectivity of the optical module can be improved, and costs of the optical module can be reduced.
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公开(公告)号：EP3358767A1
公开(公告)日：2018-08-08
申请号：EP16858813.5
申请日：2016-08-17
发明人： JI, Ruiqiang , FU, Shengmeng , SONG, Xiaolu , CHEN, Wei
摘要： An apparatus (300) and a method for processing an optical signal are provided. The apparatus includes: an optical beam splitter (310), configured to perform beam splitting processing on the optical signal to obtain a plurality of optical components; an optical delay unit (320), configured to perform delay processing on the plurality of optical components obtained by the optical beam splitter (310) by using beam splitting processing; a mode division multiplexer (330), configured to perform mode conversion on the plurality of optical components obtained by the optical delay unit (320) by using delay processing, to obtain a plurality of optical components, where any two of the plurality of optical components obtained by using mode conversion are corresponding to different guided wave modes, and the mode division multiplexer (330) is further configured to superimpose the plurality of optical components obtained by using mode conversion, to obtain a superimposed optical signal; and a photodiode detector (340), configured to convert the superimposed optical signal obtained by the mode division multiplexer (330) by using superimposition into a current signal. According to the apparatus (300), a plurality of optical components can be superimposed in an optical domain, and a quantity of photodiode detectors (340) can be reduced.
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公开(公告)号：EP3901988A1
公开(公告)日：2021-10-27
申请号：EP20744838.2
申请日：2020-01-13
发明人： ZHANG, Xin , MI, Guangcan , JI, Ruiqiang
摘要： This application discloses a quantum dot semiconductor optical amplifier and a preparation method therefor. Because positions of a plurality of localization etching holes on a pre-etching layer (203) are fixed, a position of a nanowire (204) that is from the bottom of the localization etching hole and extends along an axial direction of the localization etching hole is also fixed. In this way, a quantum dot is grown by using the nanowire (204) as a carrier, and a degree of freedom of the growth of the quantum dot is limited, so that the position of the quantum dot is fixed and the size is controllable. Because the position of the quantum dot is fixed and the size is controllable, it is avoided that quantum dots located at a same height in active sections of a plurality of nanowires (204) form a two-dimensional plane. In addition, relatively large fluctuation of alloy components caused by random sizes of the quantum dots can be effectively avoided, thereby reducing wavelength correlation of the amplifier, properly adjusting a width of a covered wave band, and reducing a noise figure.
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公开(公告)号：EP3703287A1
公开(公告)日：2020-09-02
申请号：EP18878769.1
申请日：2018-04-13
发明人： MELLONI, Andrea , MORICHETTI, Francesco , JI, Ruiqiang , AGUIAR, Douglas , MILANIZADEH, Maziyar , ZHOU, Sujie , LI, Yanbo , LUO, Long , ZENG, Li
摘要： Embodiments of this application disclose an ADD/DROP filter and an optical add/drop multiplexer, to implement closed-loop control on the ADD/DROP filter. An embodiment of this application provides an ADD/DROP filter, including: an input port, an output port, an add port, and a drop port. The add port is connected to a modulator. A first optical signal and a pilot signal are separately input to the modulator. The modulator is configured to: load the pilot signal to the first optical signal to obtain a second optical signal, and transmit the second optical signal to the add port. The second optical signal is input to the add port. A third optical signal is input to the input port. A wavelength difference between the second optical signal and the third optical signal is an integral multiple of a free spectral range. A power detector is connected to the output port and/or the drop port. The power detector is configured to: obtain an output optical signal from the output port or the drop port and detect an optical power of the output optical signal.
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公开(公告)号：EP3499282A1
公开(公告)日：2019-06-19
申请号：EP18799266.4
申请日：2018-04-08
发明人： JI, Ruiqiang , TU, Xin , LI, Yanbo , FU, Shengmeng
IPC分类号： G02B6/293
摘要： This application relates to the field of fiber optic communications, and discloses a polarization independent optical device. The polarization independent optical device includes an input/output preprocessing optical path and M add/drop optical paths. Any add/drop optical path may be configured to drop a first Q TE and a first P TE that meet a resonance condition of a microring included in the add/drop optical path, that is, each add/drop optical path may be configured to drop a desired optical signal. Any add/drop optical path may also be configured to transmit an input optical signal to the input/output preprocessing optical path, that is, each add/drop optical path may also be configured to add a desired optical signal. Therefore, when any of the M add/drop optical paths is configured to drop a desired optical signal, another add/drop optical path may be configured to add a desired optical signal. In other words, the polarization independent optical device provided by this application can simultaneously drop a desired optical signal and add a desired optical signal.
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公开(公告)号：EP3730981A1
公开(公告)日：2020-10-28
申请号：EP18901213.1
申请日：2018-01-18
发明人： ZHOU, Sujie , LUO, Long , JI, Ruiqiang , LI, Yanbo , WANG, Mai
IPC分类号： G02B6/293
摘要： This application discloses a wavelength calibration method, apparatus, and system. The wavelength calibration method is used to perform wavelength calibration for a microring filter, and specifically includes: selecting some wavelengths from a plurality of wavelengths, and performing the following operations on the microring filter for each of the some wavelengths, to obtain sets of calibrated voltages of the some wavelengths: (1) adjusting thermal tuning power of the plurality of microrings by using one set of voltages, and obtaining a plurality of sets of voltages that enable monitored optical power to have an extreme value, and (2) using the plurality of sets of voltages as a reference, adjusting the thermal tuning power of the plurality of microrings by using another set of voltages, and determining one of the sets of calibrated voltages from the plurality of sets of voltages, where the set of calibrated voltages enables the monitored optical power to converge; and then, obtaining, through calculation based on the sets of calibrated voltages of the some wavelengths, sets of calibrated voltages of other wavelengths in the plurality of wavelengths. In this method, voltage commissioning is performed only on some wavelengths, and one set of voltages with smaller values is selected from a plurality of sets of to-be-selected extreme voltages as calibrated voltages. This reduces power consumption of the microring filter. In addition, obtaining, through calculation, calibrated voltages corresponding to remaining wavelengths increases a calibration speed.
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公开(公告)号：EP3477362A1
公开(公告)日：2019-05-01
申请号：EP16909229.3
申请日：2016-07-21
发明人： LI, Yanbo , SONG, Xiaolu , DONG, Zhen , JI, Ruiqiang , FU, Shengmeng , ZENG, Li
IPC分类号： G02F1/015
摘要： An electro-optic modulator includes an input waveguide (11), a beam splitter (12) connected to the input waveguide (11), a modulation arm that is disposed on each branch of the beam splitter (12) and that is configured to modulate a signal. Each modulation arm is correspondingly disposed with a double-layer electrode, a first layer electrode (21) of the double-layer electrode is a high-frequency traveling wave electrode that is configured to change carrier concentration in the modulation arm, a second layer electrode (26) is a direct current electrode having an inductor function, and an inductor formed in the second layer electrode (26) is connected to a high-frequency traveling wave electrode of the electro-optic modulator. The second layer electrode (26) uses a direct current electrode that can form an inductor. In this way, the electro-optic modulator has some functions of a bias tee, so that integration of the electro-optic modulator can be further improved without affecting performance of the electro-optic modulator, high-density packaging layout difficulty and cabling pressure can be effectively reduced, and cabling and packaging of a multi-channel high-speed signal on a base board can be implemented.
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公开(公告)号：EP3483646A1
公开(公告)日：2019-05-15
申请号：EP16914537.2
申请日：2016-08-31
发明人： JI, Ruiqiang , FU, Shengmeng , LI, Yanbo , SONG, Xiaolu , ZENG, Li
IPC分类号： G02B27/28
摘要： An optical signal processing method and an optical component (20) are provided. The optical component (20) may implement two completely symmetric optical paths. Insertion losses of the two optical paths do not vary as an input polarization state changes, and the two optical paths have a same delay, thereby implementing polarization independence of the optical component (20). Further, two optical signals can be processed by using only one polarization-sensitive optical component (21). On one hand, costs of a user are reduced. On the other hand, the optical component (20) is always in presence of light. Therefore, a controller can control a status of the polarization-independent optical component (21).
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公开(公告)号：EP4273600A1
公开(公告)日：2023-11-08
申请号：EP22745283.6
申请日：2022-01-26
发明人： WANG, Shaowu , LEE, Chee Wei , DARMAWAN, Stevanus , LIAO, Yongping , ZENG, Jinlin , WANG, Qian , JI, Ruiqiang , JIAN, Jian
摘要： An integrated optical transceiver apparatus and an OLT are provided. A first splitter (11) and a second splitter (12) are integrated into a PLC structure (10) of the apparatus. The first splitter (11) is configured to output, from a second end (11b) of the first splitter (11) to an optical fiber (2), signal light of a first wavelength and signal light of a second wavelength that are received by a first end (11a) of the first splitter (11), and output, from a third end (11c) of the first splitter (11), signal light of a third wavelength and signal light of a fourth wavelength that are received by the second end (11b) of the first splitter (11) from the optical fiber (2). The second splitter (12) is configured to separate the signal light of the third wavelength and the signal light of the fourth wavelength that are output by the third end (11c) of the first splitter (11), output the signal light of the third wavelength from a second end (12b) of the second splitter (12), and output the signal light of the fourth wavelength from a third end (12c) of the second splitter (12). A first optical detector (21a) and a second optical detector (21b) are disposed on the PLC structure (10), where the first optical detector (21a) and the second optical detector (21b) are respectively configured to convert, into electrical signals, the signal light output by the second end (12b) of the second splitter (12) and the signal light output by the third end (12c) of the second splitter (12). The apparatus can implement sending and receiving of dual-wavelength signal light.
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公开(公告)号：EP3952151A1
公开(公告)日：2022-02-09
申请号：EP20799222.3
申请日：2020-01-19
发明人： MI, Guangcan , JI, Ruiqiang , LI, Yanbo
IPC分类号： H04J14/02
摘要： An optical add/drop multiplexer apparatus and a control method thereof are provided, to reduce a radius requirement of a microring by using a band division manner, reduce manufacturing difficulty of a microring filter, and improve reliability of the optical add/drop multiplexer apparatus. The optical add/drop multiplexer apparatus includes a filter unit, a waveband multiplexer/demultiplexer unit, an input port, an output port, a drop port, and/or an add port. The filter unit includes a plurality of microring filters, and the filter unit is connected to the waveband multiplexer/demultiplexer unit. The waveband multiplexer/demultiplexer unit is configured to input, based on wavelength of one or more input optical signals, the one or more input optical signals into a microring filter corresponding to a band to which the one or more input optical signals belong. One band corresponds to at least one microring filter, and each microring filter has a different resonance wavelength. The filter unit is configured to couple a target optical signal from the input port to the drop port, and/or couple the target optical signal from the add port to the output port. The target optical signal is an optical signal whose wavelength is equal to a resonance wavelength of the microring filter in the input optical signal.
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