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    Kaʻina OVD: 185mm G.657.A1 Optical Fiber Preform
    Kaʻina OVD: 185mm G.657.A1 Optical Fiber Preform

    Kaʻina OVD: 185mm G.657.A1 Optical Fiber Preform

      Kāhea iā mā˚ou

      Preform Specifications

      Nā Ana Hana mua

      E like me ka Papa 1.1 ma lalo iho nei na ana preform.

      Papa 1.1 Hana mua i na Ana

      'ikamu Nā koi ʻŌlelo
      1 Awelika Anawaena Hana mua (OD) 135 ~ 160 mm (Meka 1.1)
      2 ʻO ke anawaena o ka hana mua loa (ODmax) ≤ 160 mm
      3 ʻO ke anawaena hana mua liʻiliʻi (ODmin) ≥ 130 mm
      4 Ka hoʻomanawanui o OD (i loko o kahi Preform) ≤ 20 mm (ma ka ʻāpana pololei)
      5 Ka lōʻihi o ka hana mua (me ka ʻāpana lima) 2600 ~ 3600 mm (Meka 1.2)
      6 lōʻihi kūpono ≥ 1800 mm
      7 Ka lōʻihi liʻiliʻi ≤ 250 mm
      8 Ka anawaena ma ka hope o ka taper ≤ 30
      9 Preform Non-circularity ≤ 1 %
      10 Hapa Concentricity ≤ 0.5 μm
      11 Ka nana aku (Meka 1.4&1.5)

      Nānā 1.1: E ana mau ʻia ke anawaena preform ma ka ʻāpana pololei me 10mm manawa e ka Laser Diameter Measurement System a e wehewehe ʻia ʻo ia ka awelika o nā waiwai i ana ʻia. E wehewehe ʻia ka ʻāpana lipi e like me ke kūlana ma waena o A a i B. E wehewehe ʻia ka ʻāpana Pololei e like me ke kūlana ma waena o B a i C. ʻO A ke kūlana ma ka hopena o ka preform. ʻO B ke kūlana hoʻomaka me ke kumu kūpono. ʻO C ke kūlana hopena i loaʻa ke kumu kūpono. ʻO D ka ʻaoʻao hope o ka preform.
      Nānā 1.2: E wehewehe ʻia ka "Loaʻa mua" e like me ka mea i hōʻike ʻia ma ke Kiʻi 1.1.
      Nānā 1.3: E wehewehe ʻia ka ʻāpana kūpono ʻo ke kūlana ma waena o B a i C.
      Ka lōʻihi i hoʻopaʻa ʻia = ka lōʻihi kūpono - ∑Loihi hiki ʻole ke hoʻohana ʻia ma ka hemahema (LUD)

      Kiʻi 1.1 Ke ʻano o kahi Preform

      Kaʻina OVD

      Nānā 1.4: E ʻae ʻia nā ʻōhū ma ka ʻāpana o waho (e nānā i ke Kiʻi 1.2), ma muli o ka nui; ʻAʻole ʻoi aku ka nui o nā ʻōhū no kēlā me kēia leo i ʻōlelo ʻia ma ka Papa 1.2 ma lalo.

      Papa 1.2 Bubble ma ka Preform

      Kahi a me ka nui o ka Bubble

      Helu / 1,000 cm3

      Māhele Koko (=kumu + pale i loko)

      (E nānā i ka Nānā 1.5)

      Māhele Pāʻani waho

      (=interface + pale waho)

      ~ 0.5 mm

      ʻAʻohe Helu

      0.5 ~ 1.0 mm

      ≤ 10

      1.0 ~ 1.5 mm

      ≤ 2

      1.5 ~ 2.0 mm

      ≤ 1.0

      2.1 mm ~

      (E nānā i ka Nānā 1.5)

      Kiʻi 1.2 Nānā Keʻa o kahi Preform

      Kaʻina OVD2

      Nānā 1.5: Inā loaʻa kekahi mau hemahema, i wehewehe ʻia ma lalo nei, ma ka ʻāpana kumu a / a i ʻole ka ʻāpana pale o waho, e wehewehe ʻia ka ʻāpana e uhi ana i 3 mm mai kēlā me kēia ʻaoʻao o ka hemahema ma ke ʻano he ʻāpana hiki ʻole ke hoʻohana (Figure 1.3). I kēia hihia, e wehewehe ʻia ka lōʻihi kūpono me ka ʻole o ka lōʻihi o ka ʻāpana hiki ʻole ke hoʻohana. E hōʻike ʻia ka ʻāpana hiki ʻole ke hoʻohana ʻia e "Defect MAP", e hoʻopili ʻia i ka pepa nānā.
      Nā hemahema:
      1. he ʻōhū i ʻoi aku ka nui ma mua o 2 mm i loko o ka pale o waho,
      2. he puʻupuʻu liʻiliʻi i loko o ka pale o waho,
      3. he ʻōhū i loko o ka pā a i ʻole ke kumu,
      4. he mea 'ē i loko o ka preform,

      Kiʻi 1.2 Nānā Keʻa o kahi Preform

      Kaʻina OVD3

      Kaumaha i kau ʻia

      E helu ʻia ke kaupaona ʻana penei;
      Kaumaha i hoʻopaʻa ʻia[g] ＝Ke kaumaha nui o ka hana mua－ ʻAʻole paona kūpono ma ka ʻāpana lipi a me ka ʻāpana lima－ Ke kaumaha kīnā
      1. ʻO ke kaumaha holoʻokoʻa o ka preform ka paona i hoʻāʻo ʻia e nā mea hana.
      2. ʻO ka "kaumaha kūpono ʻole ma ka ʻāpana lipi a me ka ʻāpana" he waiwai paʻa i hoʻoholo ʻia e ka ʻike.
      3. Kaumaha hemahema ＝ Ka nui o ka hapa hapa [cm3]) × 2.2[g/cm3]; “2.2[g/cm3]” ka mānoanoa o ke aniani quartz.
      4. “Ka nui o ka hapa hemahema” ＝ (OD[mm]/2)2 ×Σ(LUD)×π; LUD =Loaʻa hiki ʻole ke hoʻohana ʻia ma kahi hemahema=Loihi kīnā+ 6[mm].
      5. E ana mau ana ke anawaena preform ma ka aoao pololei me ka 10mm manawa e ka Laser Diameter Measurement System.

      Nā hiʻohiʻona Fiber Target

      Ke kūpono a paʻa nā kūlana kaha kiʻi a me nā kūlana ana, e manaʻo ʻia nā preforms e hoʻokō i nā kikoʻī kikoʻī kikoʻī e like me ka hōʻike ʻana ma ka Papa 2.1.

      Papa 2.1 Nā hiʻohiʻona o ka fiber Target

      'ikamu

      Nā koi

      1

      Attenuation ma 1310 nm

      ≤ 0.35 dB/km

      Attenuation ma 1383 nm

      ≤ 0.35 dB/km

      (Meka 2.1)

      Attenuation ma 1550 nm

      ≤ 0.21 dB/km

      Attenuation ma 1625 nm

      ≤ 0.23 dB/km

      Kaulike o ka Attenuation

      ≤ 0.05 dB/km ma 1310&1550 nm

      2

      Ke Anawaena kahua ma ka 1310 nm

      9.0 ± 0.4 µm

      3

      Ka lōʻihi o ka hawewe ʻoki uwea (λcc)

      ≤ 1260 nm

      4

      Loihi Hawewe Puehu Kole (λ0 )

      1300 ~ 1324 nm

      5

      Hoʻopuehu ma 1285~1340 nm

      -3.8 ~ 3.5 ps/(nm·km)

      6

      Hoʻopuehu 1550 nm

      13.3 ~ 18.6 ps/(nm·km)

      7

      Hoʻopuehu 1625 nm

      17.2 ~ 23.7 ps/(nm·km)

      8

      Puka laha ma λ0

      0.073 ~ 0.092 ps/(nm2·km)

      9

      Kupa/Cladding Concentricity Hapa

      ≤ 0.5 µm

      10

      Nalo i hoʻokomo ʻia ka Macro Bending

      (Meka 2.2)

      30mm anawaena, 10 huli, ma 1550nm

      ≤ 0.25 dB

      30mm anawaena, 10 huli, ma 1625nm

      ≤ 1.0 dB

      20mm anawaena, 1 huli, ma 1550nm

      ≤ 0.75 dB

      20mm anawaena, 1 huli, ma 1625nm

      ≤ 1.5 dB


      Nānā 2.1: ʻAʻole e hoʻokomo ʻia ka attenuation ma 1383 nm ma hope o ka hoʻāʻo ʻana i ka wā kahiko o ka hydrogen i ka Papa 2.1 no ka mea e hilinaʻi nui ʻia i nā kūlana kiʻi fiber.

      'Ōlelo Aʻo 2.2: No ka hōʻoia 'ana i ka lākiō puka o G.657.A1 fiber, pono e hoʻomalu pono ʻia nā kūlana kaha kiʻi no ka hoʻonui ʻana i ka lōʻihi o ka nalu ʻoki ʻia ma mua o 1270 nm. Pono e hoʻāʻo ʻia ka lōʻihi o ka hawewe ʻoki ʻoki i ka wā i ʻoi aku ka nui o ka hawewe ʻoki ʻoki ʻia ma mua o 1300nm.