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Tumira Kubvunza Kuti Udhaunirodhe Chigadzirwa Chedata Sheet

G.657.A1 vs G.657.A2: Kuenzanisa Kwakazara kweFiber yeMode Imwe Isinganzwisisiki

2026-08-06
FTTH, FTTB, MDU multi-dwelling indoor wiring, compact data center cables uye micro-duct deployment zvakaisa zvinodiwa zvakasimba kuti fiber bend ishande zvakanaka. Traditional G.652.D single-mode fiber ichaburitsa kurasikirwa kuri pachena kwe macrobending kana bend radius iri diki zvakanyanya, zvichikonzera optical attenuation yakanyanya, unsteady PON service, intermittent drop-out uye even fiber fracture panzvimbo yacho. ITU‑T yakaburitsa G.657 standard kugadzirisa dambudziko iri, ichitsanangura mhando mbiri dze fiber dzinoenderana ne backward bend insensitivity: G.657.A1 uye G.657.A2.
Mainjiniya mazhinji enetwork, makondirakiti emapurojekiti nevashandi vekutenga zvinhu vanosangana nematambudziko akasiyana-siyana: Ndeipi musiyano chaiwo wehunyanzvi uripo pakati peG.657.A1 neG.657.A2? Sezvo vachitaridzika zvakafanana, ungadzivisa sei kunyengedzwa nezvinhu zvisina kunyorwa zvakanaka? Ndeipi mamiriro ezvinhu anosarudza A1 uye ndeipi inofanira kushandisa A2? Mapurojekiti mazhinji anosangana nematambudziko akavanzika: kushandisa A1 munzvimbo yakamanikana inokombama, zvichikonzera kukundikana kugamuchirwa, kugadziriswa kunowanzoitwa mushure mekutengesa uye mutengo wepurojekiti wakakwira kwenguva refu, kunyangwe mutengo wekutanga wezvinhu wakachengetedzwa.
Chinyorwa chino chinoenzanisa G.657.A1 naG.657.A2 kubva kumaparamita akajairwa eITU‑T, kurasikirwa nekukotama, kuenderana, mamiriro ekushandisa, ongororo yemitengo, njodzi dzeinjiniya dzakajairika uye nzira dzekuongorora kutenga, zvichikubatsira kusarudza fiber chaiyo yeFTTH, waya dzemukati, MDU uye mapurojekiti ema microduct.
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1. Tsananguro Yepakati & MaParamita Akajairwa eITU‑T

Dzese G.657.A1 neG.657.A2 dziri muCategory A bend-insensitive single-mode fiber, dzinoenderana neG.652.D fiber yekare, zvinoreva kuti matching mode-field diameter, dzinogona kusanganiswa zvakananga kana kubatanidzwa neG.652.D iripo network isina kurasikirwa zvakanyanya. Idzi iwaya dzemhando yepamusoro dzemvura, dzinotsigira O/S/C/L multi-band transmission, dzichichinjika kuPON, 10G PON, XGS PON uye future high-speed optical access networks.
Musiyano unonyanya kukosha uri mu nzvimbo yekukotama inobvumidzwa uye nhamba yekurasikirwa kwehukuru hwemacrobending pasi pekukotama kwenzvimbo diki, inotsanangurwa neITU-T G.657-2024 standardITU.
Paramita G.657.A1 G.657.A2
Rakatsanangurwa nharaunda yekukombama kushoma 10 mm 7.5 mm
Kurasikirwa kweMacrobending @15 mm radius, 10 turns, 1550 nm ≤0.25 dB ≤0.03 dB
Kurasikirwa kweMacrobending @10 mm radius, turn imwe, 1550 nm ≤0.75 dB ≤0.10 dB
Kurasikirwa kweMacrobending @7.5 mm radius, turn imwe, 1550 nm Hazvina kutaurwa ≤0.50 dB
Dhiyamita yemunda weModhi @ 1310 nm 8.6±0.4 μm 8.6±0.4 μm
Kuenderana Inoenderana zvizere neG.652.D Inoenderana zvizere neG.652.D
Mutengo wakajairika wekuenzanisa Nheyo yekutanga +8~15% yakakwira kupfuura A1
Zvakakosha: Hapana musiyano uripo pakati peG.657.A1 neG.657.A2. Haugone kusiyanisa zvinhu izvi nekupenda ruvara kana chitarisiko. Kuongororwa kwerabhoritari yekurasikirwa nechinhu chemacrobending chete ndiko kunogona kusimbisa modhi chaiyo. Vatengesi vazhinji vakaipa vanonyora G.657.A1 seG.657.A2 kuti vawane purofiti yakawedzerwa, inova njodzi huru pabasa rekutenga zvinhu.

2. Kuenzanisa kwakadzama kwekushanda

2.1 Kuramba kukotama & kurasikirwa nekukotama kwehukuru

Kurasikirwa nekukombama kwemagetsi ndiko kunoratidza tambo mbiri idzi. Kana tambo dzakakombama, chikamu chechiedza chinodarika mwero wechiedza chinofukidza jira, zvichiita kuti tambo dzisanyanya kutenderera. Kana tambo dzakakombama dziri diki, zvinoita kuti tambo dziwedzere kutenderera.
G.657.A1 yakagadzirirwa kushandiswa pa 10 mm bend radius. Pasi pekugadzirwa kwe 7.5 mm, mashandiro ayo akasimba. Asi kana ikamanikidzwa kupinda mu 7.5 mm sharp bend, kurasikirwa kwe macrobending kunokwira zvakanyanya, izvo zvinosundidzira bhajeti rePON link kunze kwenzvimbo, zvinounza ONU isina kugadzikana online, kurasikirwa kwepaketi zvisina tsarukano, kunyunyuta kwekunonoka kubva kune vashandisi, kunyanya zviri pachena pasi pe 1550 nm uye 1625 nm long wavelength signal.
G.657.A2 inoshandisa dhizaini yepamusoro ye core cladding doping, inoderedza zvakanyanya kudonha kwechiedza pasi pekukotama kwe small radius. Pa 15 mm bending radius, kurasikirwa kwe ten-turn macrobending kunongova ≤0.03 dB, kwakaderera zvakanyanya pane A1. Inotsigira zvakadzikama 7.5 mm bending radius. Kunyangwe kana installer ikagadzira 90-degree corner routing yakapinza, compact coil mukati me splice closure kana tight-size optical box, signal attenuation inoramba iri padanho rakaderera, zvichiunza kushivirira kwakanyanya kwekuvaka kune vashandi vemumunda. Kunyangwe kushanda zvisina kunaka nemaoko hakuzokonzere kutadza kukuru kwe optical.

2.2 Kuenderana kwenetwork uye mashandiro ekubatanidza

Zvese A1 neA2 zvinoenderana nedhayamita yeG.652.D mode‑field‑. Nyanzvi dzemumunda dzinogona kubatanidza G.657.A1/A2 nefayibha yekare yeG.652.D munetwork yekunze kwefekitori. Hapana kuchinjika kwakakosha kwepurogiramu yekubatanidza kunodiwa. Kubatanidza kwakajairika kwekubatanidza kunogona kuwana kukosha kwekurasikirwa kwekubatanidza kunoenderana.
Zano rinoshanda pakuvaka: Kunyangwe kuenderana kwakanaka, magumo efiber yakasviba, kunaka kwekucheka kucharamba kuchikonzera kurasikirwa kukuru kwekubatanidza. Kune mixed fiber splicing, high-precision cleaver uye fusion splicing michina inokurudzirwa zvikuru kuti ive nechokwadi chemhando yekubatanidza.

2.3 Kuvimbika kwemuchina

Mafiber ese ari maviri anosangana nechiyero cheITU T chekudzivirira kusvuta che0.69 GPa. Kana tichitaura nezvesimba rekusimba, simba remuchina we coating layer, hapana musiyano uri pachena. Musiyano uyu unoratidzwa mukushanda kwemuchina wekudzivirira kusvuta pasi pemamiriro ekukombama akakombama kakawanda. G.657.A2 inogona kugara yakakombama diki pasina njodzi yekuputika, yakakodzera mamiriro ezvinhu apo fiber inogona kugadziriswa kakawanda uye kugadziriswazve mushure mekuiswa.

2.4 Mamiriro emutengo uye kutengeswa kwezvinhu

G.657.A1 ine maitiro ekugadzira ari nyore, kuwanikwa kwakakwana pasi rose, mutengo wakagadzikana, yakakodzera kutenga mapurojekiti akawanda.
G.657.A2 inoda kudzora kwakaringana kwekushandisa mishonga yedoping. Mutengo wezvinhu zvisina kugadzirwa wakakwira. Mune mamwe matunhu emusika, kuwanikwa kwezvinhu kunogona kunge kwakaoma, nguva yekukosha kwemutengo ipfupi, kuchinja kwemitengo kwakakura. Mamaneja mazhinji emapurojekiti anowanzo sarudza A2 pakushandisa zvese, izvo zvinounza kurasikirwa kwemari kusingakoshi kumapurojekiti asina zvinodiwa zvidiki.

3. Kuongorora Maitiro Ekushandisa: Nguva yekusarudza G.657.A1, nguva yekusarudza G.657.A2

Sarudza G.657.A1 yezviitiko izvi

  1. Kuiswa kwetambo yeFTTH yakajairwa: kubva pakabati yekugovera mumugwagwa kusvika kumadziro ekunze, nzira yekufambisa yakavhurika zvishoma, isina makona akapinza zvakanyanya.
  2. Waya dzeMDU dzechivako chitsva: nzvimbo yakakwana yepombi, hunyanzvi hwekuvaka hunodzora zvakakwana dhayamita yekukombama ≥10 mm.
  3. Mapurojekiti makuru einjiniya ehurumende ane bhajeti shoma, nzira zhinji dzakatwasuka, asi zvikamu zvishoma chete zvinokotama zvishoma.
  4. Purojekiti yekuvakazve network yakasanganiswa, kubatanidza zvinhu zvakawanda nefiber yekunze kweG.652.D iripo, zvichitevera kuenzana kwemitengo.
G.657.A1 inopa kugona kwakakodzera kwekusagona kupinza zvinhu pamutengo wakaderera. Chero bedzi timu yekuvaka ichinyatsotevedzera zvinodiwa zve 10 mm, kugadzikana kwekushandisa network kunogona kuvimbiswa zvizere.

Unofanira kusarudza G.657.A2 pazviitiko izvi

  1. Waya dzemukati dzemumba dzekare: mugero wakamanikana wakavanzika, kona yemadziro ine madhigirii 90, nzvimbo shoma yewaya.
  2. MDU ine density yakakura, bhokisi rekuparadzira remagetsi rakatetepa, kuvharwa kwemadziro emukati memadziro akatetepa, waya dzemakabati dzine nzvimbo shoma.
  3. Kuiswa kwemuchina mudiki, jumper yefiber yakamiswa mukati, kuvaka fiber yakavigwa pamadziro.
  4. Purojekiti yekugadzirisa zvinhu isina kudzoreka panzvimbo yekuvaka: mugadziri anogona kukotama diki zvakanyanya panguva yekuvaka. Shandisa A2 kuti uvandudze kushivirira kukanganisa kwechinhu chose.
  5. Network yevatengi inodiwa kuti ive yakavimbika: kuvaka mabhizinesi, nharaunda yepamusoro, kudzivirira kugadziriswa kwekutengesa mushure mekutengesa kunokonzerwa nekukundikana kwekurasikirwa kwakakombama.
Chiyeuchidzo chakakosha: Kana ukaisa G.657.A1 mumamiriro ezvinhu anoda kushanda zvakanaka kwe 7.5 mm, unogona kupasa bvunzo yekugamuchirwa kwefekitori, asi dambudziko rakavanzika richatanga mushure memwedzi yekushanda: kuchinja kwekushisa, kutama kwefiber zvishoma kuchaita kuti kurasikirwa kwe macrobending kuwedzere zvishoma nezvishoma, zvichikonzera kutadza kushanda. Dambudziko iri rakaoma kuona mubasa rekugadzirisa rezuva nezuva, zvichiunza mari yakawanda yeOPEX kune vanoshanda.

4. Zvinorwadza zveindasitiri yese uye zvikanganiso zvakajairika

Nhanho yekutanga yekurwadziwa: Kufungidzira kwekuona

Vatengi vazhinji vanofunga zvisirizvo kuti vanogona kusiyanisa A1/A2 nekuonekwa kwefaibha. Kutaura zvazviri, kufukidza faibha isina chinhu, kutaridzika kwejaketi rekunze kwetambo hakuna musiyano. Tambo dzakanyorwa zvisirizvo dzinonetsa kuona kana zvinhu zvagamuchirwa, matambudziko anongobuda chete mushure mekupedzwa kwekuvaka, zvichikonzera mari yakawanda yekugadzirisa patsva purojekiti.

Nhanho yechipiri yekurwadziwa: Kusarudzwa kwekuwedzera kana kusanyanya kutsanangurwa

Maitiro maviri asina kunaka akajairika:
  1. Zvese zviri muA2: Pasinei nenzvimbo chaiyo yavakaisa zvinhu, kutenga zvese G.657.A2, zvichikonzera kuwedzera kwemitengo yepurojekiti.
  2. Zvese zviri muA1: Tevedzera zvinhu zvakachipa usingazive, shandisa A1 mukugadzirisa imba yekare, ine tambo dzakatetepa. Chiratidzo chekugamuchirwa hachina kukodzera, kana kusagadzikana kwebasa renguva pfupi kunoitika.
Pfungwa dzakarurama: Siyanisa zvichienderana nemamiriro chaiwo enzira panzvimbo. Govanisa nzvimbo yepurojekiti: shandisa A1 yechikamu chenzira yakavhurika, shandisa A2 yechikamu chewaya chemukati chakamanikana, ongorora chiyero chemutengo nekushanda.

Nhanho yechitatu yekurwadziwa: Confuse G.657.A series uye G.657.B series

G.657.A1/A2 inochengetedza G.652.D yakazara inoenderana ne backward, yakakodzera network yeFTTH. G.657.B2/B3 ine waya diki inokotama mukati, ine chikamu che index chinosiyana neG.652.D, hachina kukodzera nzvimbo yekusunganidza zvirimwa zviri kure. Mainjiniya mazhinji anosanganisa A series neB series, zvichikonzera njodzi yekuenderana mu network reconstruction projectITU.

Nhanho yechina yekurwadziwa: Usafuratira mushumo webvunzo dzeboka rese mukutenga

Odha yekutenga inongoratidza rudzi rwefiber chete, asi hazvidi kuti mutengesi ape mushumo wekuyedza kurasikirwa kwebatch macrobending. Kana kutsiva kwenhema kwaitika, munhu ari muchirongwa anowana kurasikirwa kwese.

5. Nzira dzakanakisisa dzekutenga nekutumira zvinhu

  1. Chitsauko chehunyanzvi chakajeka mugwaro rekutenga: Siyanisa mhando yefaibha zvichienderana nemamiriro ezvinhu, kwete kutsanangura zvakafanana modhi imwe chete yepurojekiti yese.
  2. Zvinoda kuti mutengesi ape mushumo wekuyedza kurasikirwa kwe macrobending unoenderana ne batch, uchitarisa pane 1550 nm macrobending loss index iri pasi pe15 mm uye 10 mm bending radius, iyi ndiyo nzira inoshanda kwazvo yekuziva A1/A2 yechokwadi neyenhema.
  3. Nezve zvirevo zvekuvaka: Kunyangwe uchishandisa G.657.A2, usaparadza nzvimbo yekukombama isina kurongeka pakuvaka. Kudzivirira kukotama kudiki ndiko kukwanisa kushivirira zvikanganiso, kwete kukurudzira maitiro asina kunaka ekuvaka. Kuvaka kwakajairika kunofanira kuteverwa.
  4. Kuverenga bhajeti rezvinobatanidza: Paunenge uchigadzira chinobatanidza chePON, chengetedza imwe nzvimbo yekuderedza kurasikirwa kwemagetsi, kunyanya pachikamu chewaya dzemukati.
  5. Bvunzo yekugamuchira: Kwete kungoedza kurasikirwa kwese kwese kwekubatanidza, asiwo teerera kukosha kwekuderedza kureba kwewavelength (1550 nm, 1625 nm). Kureba kwewavelength kunonyanya kunzwisiswa nekurasikirwa kwe macrobending, kunogona kuratidza zvikanganiso zvakavanzwa zvinobudirira.

6. Pfupiso

G.657.A1 naG.657.A2 ese ari maviri mature bend-insensitive single-mode-fiber ye network yemazuva ano yeFTTx. G.657.A1 inotarisa tambo yeFTTH-drop-and-medium-bending-scene, ine mukana wemutengo wakaderera; G.657.A2 yakatarisana nenzvimbo yakamanikana, kugadziriswa kwechivako chekare, nzvimbo yekubatanidza waya mukati, ichipa simba rakasimba rekudzivirira macrobending-performance uye kushivirira zvikanganiso zvekuvaka, pamutengo wakakwira.
Hapana chiri nani pakati peG.657.A1 neG.657.A2. Chinhu chikuru chekusarudza ndechekuenzanisa mashandiro efiber nemamiriro chaiwo ekuisa. Kutsvaga zvinhu zvisina kujeka kana zvakanyanya kudhura kunounza njodzi yepurojekiti. Mainjiniya nevatariri vekutenga vanofanirwa kusanganisa mamiriro epombi, kugadzirisa kana kuvaka kutsva, kugona kwechikwata chekuvaka, bhajeti repurojekiti kuti vaite sarudzo ine musoro. Panguva iyi, simbisa kuongororwa kwezvinhu zvinouya, dzivirira njodzi yezvigadzirwa zvisina kunyorwa zvakanaka, dzivirira kurasikirwa kukuru mushure mekupedzwa kwetambo.
Kune vanoisa, vanobatanidza masisitimu nevatengi vetambo, kuziva musiyano weG.657.A1 neG.657.A2 kunobatsira kugadzirisa kugadzikana kwenetwork, kudzora huwandu hwemari inoshandiswa pakugadzirisa network, kuderedza mutoro webasa rekugadzirisa mushure mekutengesa kweFTTH.

Taura Nesu, Wana Zvigadzirwa Zvemhando Yepamusoro uye Basa Rekungwarira.

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