JP2010204106A5 - - Google Patents
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- JP2010204106A5 JP2010204106A5 JP2010090419A JP2010090419A JP2010204106A5 JP 2010204106 A5 JP2010204106 A5 JP 2010204106A5 JP 2010090419 A JP2010090419 A JP 2010090419A JP 2010090419 A JP2010090419 A JP 2010090419A JP 2010204106 A5 JP2010204106 A5 JP 2010204106A5
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- optical
- sampling
- signal
- pulse
- optical signal
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- 230000003287 optical Effects 0.000 claims 53
- 238000005070 sampling Methods 0.000 claims 31
- 239000002041 carbon nanotube Substances 0.000 claims 10
- 229910021393 carbon nanotube Inorganic materials 0.000 claims 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 9
- 238000010521 absorption reaction Methods 0.000 claims 1
- 230000000051 modifying Effects 0.000 claims 1
Claims (6)
入射光のパワーに応じて該入射光に対する吸収率が変化する特性を有し、前記光信号と前記サンプリング用光パルスとを受けるカーボンナノチューブ素子(23)を備え、
さらに、前記サンプリング用光パルスの波長が前記光信号と異なる波長に設定されてお り、
前記光信号と前記サンプリング用光パルスとを合波して前記カーボンナノチューブ素子 の一方の光端子に入射させる光カプラ(25′)と、
前記カーボンナノチューブ素子の他方の光端子から出射される光のうち、前記光信号の 波長成分を選択的に出射する波長フィルタ(29)とを備え、
前記カーボンナノチューブ素子に前記サンプリング用光パルスを入射させたときのみ前記光信号を小さい吸収率で出射させることを特徴とする光サンプリング装置。In an optical sampling device (22) that receives an optical signal to be sampled and a sampling optical pulse having a predetermined period, samples the optical signal with the sampling optical pulse, and emits an optical pulse signal obtained by the sampling.
A carbon nanotube element (23) having a characteristic that an absorptance with respect to the incident light changes according to the power of the incident light, and receiving the optical signal and the sampling optical pulse,
Further, Ri our wavelength of the sampling optical pulses is set to a wavelength different from that of the optical signal,
An optical coupler (25 ') to be incident on one of the optical terminal of the said optical signal and the sampling optical pulse multiplexing to the carbon nanotube device,
A wavelength filter (29) that selectively emits a wavelength component of the optical signal out of the light emitted from the other optical terminal of the carbon nanotube element ;
An optical sampling apparatus characterized in that the optical signal is emitted with a small absorption rate only when the sampling optical pulse is incident on the carbon nanotube element.
入射光のパワーに応じて該入射光に対する吸収率が変化する特性を有し、前記光信号と 前記サンプリング用光パルスとを受けるカーボンナノチューブ素子(23)を備え、
さらに、前記光信号と前記サンプリング用光パルスの偏光方向を互いに直交させるため の偏波制御器(28)と、
前記偏光方向が互いに直交した前記光信号と前記サンプリング用光パルスとを合波して 前記カーボンナノチューブ素子の一方の光端子に入射させる光カプラ(25″)と、
前記カーボンナノチューブ素子の他方の光端子から出射される光のうち、前記光信号の 偏光成分を選択的に出射する偏光フィルタ(29′)とを備え、
前記カーボンナノチューブ素子に前記サンプリング用光パルスを入射させたときのみ前 記光信号を小さい吸収率で出射させることを特徴とする光サンプリング装置。 Receiving a sampling optical pulse of the optical signal and a predetermined period of the sampling target, said optical signal is sampled by the sampling optical pulses, the optical sampling apparatus (22) for emitting the resulting et optical pulse signal by the sampling ,
Have the property of absorbing rate changes for incident light according to the power of the incident light, comprising a carbon nanotube device (23) for receiving the said optical signal and said sampling light pulse,
Furthermore, a polarization controller (28) for making the polarization direction of the optical signal and the sampling optical pulse orthogonal to each other ;
An optical coupler (25 ″) that combines the optical signal having the polarization directions orthogonal to each other and the sampling optical pulse to enter one optical terminal of the carbon nanotube element;
A polarization filter (29 ′) that selectively emits a polarization component of the optical signal out of the light emitted from the other optical terminal of the carbon nanotube element ;
Optical sampling device, characterized in that to emit a small absorptivity previous serial optical signal only when illuminating the sampling optical pulse in the carbon nanotube device.
前記光信号を前記サンプリング用光パルスによってサンプリングし、そのサンプリングThe optical signal is sampled by the sampling optical pulse, and the sampling is performed. によって得られた光パルス信号を出力する光サンプリング装置(22)と、An optical sampling device (22) for outputting an optical pulse signal obtained by
前記光パルス信号を受けて電気信号に変換する光電変換器(30)と、A photoelectric converter (30) that receives the light pulse signal and converts it into an electrical signal;
前記光電変換器の出力信号に基づいて、前記監視対象の光信号の品質を表す値を算出すBased on the output signal of the photoelectric converter, a value indicating the quality of the optical signal to be monitored is calculated. る演算部(35、35′)とを有する光信号品質モニタにおいて、In an optical signal quality monitor having an arithmetic unit (35, 35 ')
前記光サンプリング装置が、前記請求項1〜4のいずれかに記載の光サンプリング装置The optical sampling device according to any one of claims 1 to 4, wherein the optical sampling device is であることを特徴とする光信号品質モニタ。An optical signal quality monitor characterized by
前記基本波成分信号と所定のしきい値とを比較するコンパレータ(42)と、A comparator (42) for comparing the fundamental component signal with a predetermined threshold;
前記基本波成分信号が前記しきい値を超えるタイミングから前記光電変換器の出力信号The output signal of the photoelectric converter from the timing at which the fundamental wave component signal exceeds the threshold value に対する波形情報の取得を開始するデータ取得制御部(44)とを有していることを特徴And a data acquisition control unit (44) for starting acquisition of waveform information for とする請求項5記載の光信号品質モニタ。The optical signal quality monitor according to claim 5.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010090419A JP2010204106A (en) | 2010-04-09 | 2010-04-09 | Optical sampling device and optical signal quality monitor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010090419A JP2010204106A (en) | 2010-04-09 | 2010-04-09 | Optical sampling device and optical signal quality monitor |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007122122A Division JP2008275547A (en) | 2007-05-07 | 2007-05-07 | Optical sampling device and optical signal quality monitor |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2010204106A JP2010204106A (en) | 2010-09-16 |
JP2010204106A5 true JP2010204106A5 (en) | 2010-11-04 |
Family
ID=42965701
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2010090419A Pending JP2010204106A (en) | 2010-04-09 | 2010-04-09 | Optical sampling device and optical signal quality monitor |
Country Status (1)
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JP (1) | JP2010204106A (en) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05256702A (en) * | 1992-03-13 | 1993-10-05 | Nec Corp | Analyzer of light spectrum |
JPH0882813A (en) * | 1994-09-12 | 1996-03-26 | Nippon Telegr & Teleph Corp <Ntt> | Optical identifying and reproducing device |
JP3796357B2 (en) * | 1997-12-01 | 2006-07-12 | 日本電信電話株式会社 | Optical signal quality monitor |
FR2872280B1 (en) * | 2004-06-15 | 2006-11-24 | Commissariat Energie Atomique | MONOCOUP PULSE PROFILE MEASUREMENT DEVICE OF VERY SHORT DURATION |
JP4665171B2 (en) * | 2005-09-29 | 2011-04-06 | 国立大学法人東北大学 | SWNT saturable absorption optical material manufacturing method, pulse laser device, all-optical type optical switch device |
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2010
- 2010-04-09 JP JP2010090419A patent/JP2010204106A/en active Pending
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