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41. 发明公开

EP4054092A1 SLOPE GAIN EQUALIZER 审中-实审
公开(公告)号：EP4054092A1
公开(公告)日：2022-09-07
申请号：EP20883622.1
申请日：2020-09-11
申请人： Kohoku Kogyo Co., Ltd.
发明人： OKUBO, Toshihisa , KATO, Takashi
IPC分类号： H04B10/294 , G02B6/293 , G02B6/32
摘要： A slope gain equalizer 1 that corrects a slope of a gain characteristic of an optical signal in a predetermined wavelength bandwidth, in which an interference filter 5, which allows insertion losses in a predetermined wavelength region to be inclined in opposite directions between a transmitting direction and a reflecting direction from a short wavelength side to a long wavelength side, is arranged between a dual-core fiber collimator 3 and a single-core fiber collimator 4 arranged to face each other on an optical axis 100, an optical signal of a predetermined bandwidth that is inputted from a first or a second optical fiber (7 or 8) held by the dual-core fiber collimator is reflected by the interference filter and outputted from the second or the first optical fiber, and an optical signal inputted from a third optical fiber 11 held by the first optical fiber or the single-core fiber collimator is transmitted through the interference filter and outputted from the third or the first optical fiber.

42. 发明公开

EP4030640A1 CONTROL METHOD AND OPTICAL FIBER AMPLIFIER 审中-实审
公开(公告)号：EP4030640A1
公开(公告)日：2022-07-20
申请号：EP19944670.9
申请日：2019-12-05
申请人： Accelink Technologies Co., Ltd.
发明人： TAO, Jintao , FU, Chengpeng , ZENG, Bingmei , FAN, Jingyang , ZHANG, Hao , CHENG, Lijing , YU, Chunping , LE, Menghui
IPC分类号： H04B10/294
摘要： Disclosed are a control method and an optical fiber amplifier. The optical fiber amplifier is configured to execute the control method. The method comprises: initially correcting a target gain on the basis of a first compensation gain to obtain an initially corrected target gain; when the actual power of the pump laser reaches target power determined on the basis of the initially corrected target gain obtaining, on the basis of a first signal optical power and a second signal optical power, a second compensation gain and a first compensation slope through calculation; correcting the initially corrected target gain again according to the second compensation gain to obtain a corrected target gain; and correcting a target slope according to the first compensation slope to obtain a corrected target slope. This solution can provide high precision control for the gain and the slope of the optical fiber amplifier.

43. 发明公开

EP3691058A1 LIGHT AMPLIFICATION DEVICE AND LIGHT AMPLIFICATION METHOD 审中-公开
公开(公告)号：EP3691058A1
公开(公告)日：2020-08-05
申请号：EP18861748.4
申请日：2018-09-18
申请人： NEC Corporation
发明人： INADA Yoshihisa
IPC分类号： H01S3/10 , G02F1/35 , H04B10/294 , H04J14/02
摘要： [Problem] To provide a light amplification device with which it is possible to minimize the level deviation between wavelengths in a wideband optical wavelength multiplexed signal.
[Solution] The light amplification device 1 according to the present embodiment is provided with a de-multiplexing unit 2, a first optical amplifier 3, a second optical amplifier 4, and a multiplexing unit 5. The de-multiplexing unit 2 de-multiplexes an inputted optical wavelength multiplexed signal into a first optical wavelength multiplexed signal having a first wavelength band and a second optical wavelength multiplexed signal having a second wavelength band in a longer wavelength band than the first wavelength band. The first optical amplifier 3 amplifies the first optical wavelength multiplexed signal. The second optical amplifier 4 amplifies the second optical wavelength multiplexed signal. The multiplexer 5 multiplexes the amplified first optical wavelength multiplexed signal and the amplified second optical wavelength multiplexed signal and outputs the multiplexed signal to a Raman amplifier 6. The first optical amplifier 3 adjusts the amplification rate of the first optical wavelength multiplexed signal so that the intensity of light in the second wavelength band is compensated for by the Raman effect in the Raman amplifier 6.

44. 发明公开

EP3678304A1 OPTICAL TRANSMISSION DEVICE AND SPECTRUM CONTROL METHOD 有权
公开(公告)号：EP3678304A1
公开(公告)日：2020-07-08
申请号：EP18850844.4
申请日：2018-08-22
申请人： NEC Corporation
发明人： ASADA Hideo
IPC分类号： H04B10/294 , H04J14/02
摘要： [Problem] To provide an optical transmission device capable of controlling the spectrum shape of a wavelength multiplexed signal and improving the transmission quality.
[Solution] A light transmission device is configured to include a wavelength selecting means 1, an optical amplifying means 2, a measuring means 3, a setting means 4, and a control means 5. The wavelength selecting means 1 has a means for selecting an optical signal, and a means for outputting a signal after adjusting the signal level. The optical amplifying means 2 amplifies the wavelength multiplexed signal having the adjusted signal level. The measuring means 3 measures the spectrum of the amplified wavelength multiplexed signal. The setting means 4 sets a spectrum shape, which serves as a reference of the wavelength multiplexed signal to be outputted to the transmission line, as output spectrum setting information. The control means 5 compares the measured spectrum with the output spectrum setting information and determines the attenuation amount when adjusting the signal level for each wavelength of the wavelength multiplexed signal in the wavelength selecting means 1. In addition, the wavelength selecting means 1 adjusts the signal level on the basis of the determined attenuation amount.

45. 发明授权

EP3353909B1 AMPLIFICATION DEVICE WITH AMPLIFICATION STAGES WITH POLARIZED SOAS AND PROCESSING STAGE, FOR AMPLIFYING OPTICAL SIGNALS IN A WDM TRANSMISSION SYSTEM 有权
公开(公告)号：EP3353909B1
公开(公告)日：2019-11-13
申请号：EP16770762.9
申请日：2016-09-23
申请人： Alcatel Lucent
发明人： RENAUDIER, Jeremie , CHARLET, Gabriel , BRENOT, Romain
IPC分类号： H04B10/291 , H04B10/294 , H01S5/50 , H01S5/0683

46. 发明公开

EP3503436A1 WIDEBAND OPTICAL COMMUNICATION SYSTEM AND METHOD 审中-公开
公开(公告)号：EP3503436A1
公开(公告)日：2019-06-26
申请号：EP17306891.7
申请日：2017-12-22
申请人： Nokia Solutions and Networks Oy
发明人： RENAUDIER, Jeremie , CHARLET, Gabriel
IPC分类号： H04B10/294
摘要： Control circuitry, an optical communication system, a wideband semiconductor optical amplifier and a method of progressively adding channels to the optical communication system are disclosed. The optical communication system is configured to transmit a plurality of channels in different wavebands as a wideband wavelength division multiplexed signal, and comprises at least one wideband semiconductor optical amplifier for amplifying the wideband signal. The method comprises: preferentially selecting from available channels that are not currently assigned to an input signal, one of the longer wavelength channels as a next channel to be added to the system.

47. 发明授权

EP3148100B1 AMPLIFICATION DEVICE WITH AMPLIFICATION STAGES WITH POLARIZED SOAS AND PROCESSING STAGE, FOR AMPLIFYING OPTICAL SIGNALS IN A WDM TRANSMISSION SYSTEM 有权
公开(公告)号：EP3148100B1
公开(公告)日：2019-03-13
申请号：EP15306493.6
申请日：2015-09-25
申请人： Alcatel Lucent
发明人： RENAUDIER, Jérémie , CHARLET, Gabriel , BRENOT, Romain
IPC分类号： H04B10/291 , H04B10/294 , H01S5/50

48. 发明授权

EP3098988B1 RELIABLE AND FLEXIBLE OPTICAL DEVICE FOR LOADING ASE SIGNAL BETWEEN MULTIPLEXED CHANNELS IN A TRANSMISSION LINE, AND ASSOCIATED APPARATUS 有权转让
公开(公告)号：EP3098988B1
公开(公告)日：2019-01-09
申请号：EP15305814.4
申请日：2015-05-28
申请人： Alcatel Lucent
发明人： Charlet, Gabriel , Courtois, Olivier
IPC分类号： H04J14/02 , H04B10/2507 , H04B10/294 , H04B10/50 , H04B10/564

49. 发明公开

EP3413482A1 SIGNAL LIGHT INTERRUPTION DETECTING DEVICE, OPTICAL AMPLIFIER, OPTICAL WAVELENGTH MULTIPLEXING TRANSMISSION APPARATUS, AND OPTICAL WAVELENGTH MULTIPLEXING TRANSMISSION SYSTEM 有权
公开(公告)号：EP3413482A1
公开(公告)日：2018-12-12
申请号：EP16889299.0
申请日：2016-02-05
申请人： Mitsubishi Electric Corporation
发明人： MATSUMOTO Kanehiro , TOKURA Toshiyuki , CHIKAMORI Shun , TAKATA Kengo
IPC分类号： H04B10/079 , H04B10/294
CPC分类号： H04B10/079 , H04B10/294
摘要： A signal light interruption detection device (35) includes an optical interleaver (352) that demultiplexes wavelength-multiplexed light into light in first frequency ranges corresponding to a first frequency grid including frequencies at regular frequency intervals in which a main signal light component can be arranged and light in second frequency ranges corresponding to a second frequency grid shifted from the first frequency grid by a half cycle of the regular frequency intervals, a first optical detector (353) that detects first light power as total power of the light in the first frequency ranges, a second optical detector (354) that detects second light power as total power of the light in the second frequency ranges, and a judgment unit (355) that outputs a notification signal based on a difference between the first light power detected by the first optical detector (353) and the second light power detected by the second optical detector (354).

50. 发明公开

EP3343804A1 EQUALIZER, REPEATER, AND COMMUNICATION SYSTEM 审中-公开
公开(公告)号：EP3343804A1
公开(公告)日：2018-07-04
申请号：EP16838789.2
申请日：2016-08-18
申请人： NEC Corporation
发明人： INADA, Koji
IPC分类号： H04B10/294
CPC分类号： H04B10/294 , H04B10/25073 , H04B2210/256 , H04J14/0212 , H04J14/0221 , H04Q11/02
摘要： In order to enable easy adjustment of loss wavelength characteristics in accordance with the characteristics of a wavelength division multiplex optical signal, and the usage environment of an EDFA, etc., an equalizer 10 is provided with: a wavelength selection switch unit 20 that adds a loss profile that has been set to an inputted wavelength division multiplex optical signal, and outputs the same; and a setting unit 30 that sets the loss profile to a wavelength selection switch means on the basis of obtained setting information. The setting information is information for flattening the spectrum of the outputted wavelength division multiplex optical signal.

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