Clause No.

要求

Bidder shall state as :

Fully Compliant / Partially Compliant/Non Compliant

应答

1

General简介：

单模24芯光缆

光纤标准ITU-T rec. G.652

1.1

Scope

1.1.1

此技术规范涉及到工程需求和单模光缆及其管道类型的相关缆线的结构

1.1.2

所有在各章节的技术须知对于这份技术规范来说都是一个整体

1.2

References参照

1.2.1 *

This specification requires reference to the following standard specifications.  (Latest issue)

此份规格要遵照以下标准规格执行 (最新版)

 ITU-T rec. G.652

BS 6234: 1987.

1.3

Cable Life光缆寿命

The fibre and cable shall be designed for a life expectancy of at least 30 years without serious degradation of the performance or reliability when maintained in accordance with the manufacturer's recommendations and when operated in the environmental condition as stated in NT/00.

这个光纤的设计寿命至少为30年，在此期间不能出现任何性能和可靠性上的衰减

1.4

Component（组件）

1.4.1

Fiber（光缆）

1.4.1 .1*

The fibres shall be made from high-grade silica or compound glass. The Bidder shall submit full details of the composition of the fibres and of the manufacturing process.

光纤应该由高级二氧化硅或者复合玻璃.投标者应该提交光纤的构成和生产商生产方法

The geometric and optical properties of the fibre shall be in accordance with table below.

光纤的几何结构特征应该与下列要求相符

Mode field diameter (µm) at 1310 nm

在1310 nm波长的模场直径(µm)

9~10 ± 10 % (ITU-T rec.G652)

Cladding diameter (µm)

包层直径(µm)

125 ± 2

Core concentricity error (µm)

芯同心度偏差

1.0

Coating diameter (µm)

涂层直径

245 ± 10

Maximum Cladding Non-circularity

包层最大不圆率

2%

Maximum cut-off wavelength (nm)

最大截止波长(nm)

1260

Maximum chromatic dispersion at 1310 nm

于1310波长的最大色散值

3.5 ps/nm.km

Maximum attenuation range dB/km at 1310/1550 nm

于1310/1550最大衰减值（dB/km）

0.38/0.2

Clause No.

要求

Bidder shall state as :

Fully Compliant / Partially Compliant/Non Compliant

应答

1.4.1 .2

The loss increase of 100 turns of fibre, loosely wound with a 37.5 mm radius shall be less than 0.35 dB at wavelengths of 1310 nm.

宏弯损耗（100圈，37.5 mm半径） @1310波长  ≤0.35dB/Km

1.4.1 .3

The offered cables shall be used for SDH systems operating up to bit rate of 1 Gb/s.

光缆应用于速率达到1Gbit/s以上的SDH系统

1.4.1 .4

The nominal operating wavelength of the systems in this project shall be 1310 nm, (within the region of 1280-1330 nm). The fibers shall be able to support in the 1550 nm region. The Bidder shall supply full details of the fibre performance at both wavelengths.

performance.光缆应该使用双面防紫外基础涂层材料，投标人也可以按照性能提供其他材料，并提供其性能参数

1.4.2

Coating（涂层）

1.4.2 .1

A dual protective Ultra Violet (UV) curable primary coating shall be applied to the fiber. The Bidder may offer alternative materials with details regarding its performance.

光纤涂层为UV漆.

1.4.2 .2

Removal of the primary coating for the jointing shall be achieved without the use of chemicals. A simple mechanical operation shall be sufficient to prepare the fiber for jointing.

光纤接续时非化学方法剥离光纤涂层,采用简单机械剥离法.

1.4.3 *

Loose Tube松套管

Maximum of six fibers shall be put in a loose plastic tube. The space inside the tube shall be filled with gel.

每根松套管内最多放六根光纤，油膏填充

1.4.4

Filling Compound填充物

All spaces within the cable shall be filled to prevent the ingress or flow of moisture. The water-blocking compound shall be compatible with all other cable components and shall not cause deterioration or damage to any part of the cable. The compound shall be dermatologically safe. The viscosity of the compound must be low enough to allow free movement of the fiber. It shall be easily removable from the fiber by wiping.

光缆内部必须填充化合物以防水蒸气进入，防水化合物应该能和其他光缆成分相容不会损毁光缆的其他部件，填充物应该对皮肤安全，黏性必须足够低能使光纤自由移动，并且应该很容易擦除

1.4.5

Core Wrapping  芯线包裹

After application of water-resistant compound, at least one close helical or longitudinal application of non-hygroscopic and non-wicking plastic tape shall be applied over the cable core. The inside and outside of the core wrapping tape shall be flooded with the same compound.

在填充化合物里面，至少有一层纵向或者螺旋的用非吸湿性以及排湿性的塑料带包在芯线外边，这层包装的里层和外层应该使用同种油填充化合物

1.4.6

Moisture Barrier挡潮层

1.4.6 .1*

For Duct Cable :管道光缆

Electrolytic chrome coated corrugated steel tape with a longitudinal overlap, coated with polyethylene / co-polymer on both sides for crush, impact; rodent and general protection shall be applied throughout the cable core. The thickness of electrolytic chrome coated steel tape shall be 0.15 mm (min) and polyethylene / co-polymer coating on each side shall be 0.05 mm . This barrier shall be applied with sufficient overlay to ensure that it provides complete cover at the minimum bending radius of the cable as mentioned in mechanical characteristics. A suitable water blocking tape shall be applied under the steel tape to prevent ingress of water.

The corrugated steel tape shall be sealed and bonded to the inner surface of the polyethylene sheath extended over it. The tape shall be electrically continuous throughout the length.

采用纵包涂塑电镀皱纹钢带挡潮，以防冲击, 挤压或动物嚼咬等。钢带的厚度应为0.15mm,聚乙烯/聚丙烯的厚度应为0.05 mm, 总厚度为0.25mm, 搭接宽度应能保证以最弯曲半径弯曲光缆时仍能包裹缆芯, 钢带下面应有阻水带.

钢带必须与内护套紧贴在一起.

Clause No.

要求

Bidder shall state as :

Fully Compliant / Partially Compliant/Non Compliant

1.4.7

Sheath护套

1.4.7 .1

The cable shall be sheathed with polyethylene type 03C in accordance with the requirements of BS 6234-1987.

光缆的护套应使用03C型的聚乙烯材料，按照BS 6234-1987规格

1.4.7 .2

The sheath shall be free of pinholes, joints and other defects. It shall be circular in shape. Thermoplastic cylinder may be used as filler for circular core formation.

此护套不能有针孔，结头，和其他缺陷，形状为圆形，热塑注入成圆形

1.4.8

Strength Members加强构件

1.4.8 .1*

Central strength Member: 中心加强构件

All types of cables shall have one solid galvanized steel wire as central strength member.  The loose tubes shall be placed around the central strength member (Annex - II)

所有型号的光缆必需要有一个固定镀锌钢丝作为中心加强构件。松套管围绕这个加强件安置（如图Annex - II所示）

1.4.8 .2

Duct Cable : 

The moisture barrier for duct cable as stated in clause No. - 1.4.6 .1 shall be used as strength member.

对于中心加强件管道的防潮材料规定 如 1.4.6 .1的规定相同

1.5

Cable Constructional Requirements 管道光缆结构要求

1.5.1 *

Duct Cables

Construction and mechanical requirements of the duct cable shall be as per the table below. Please also refer attached drawing.

管道光缆结构和机械要求如下所示

Maximum external diameter (mm)

最大外径（mm）

14

Nominal outer sheath thickness (mm)

外护套标称厚度（mm）

2

Nominal thickness of corrugated steel tape (mm)

皱纹钢管标称厚度（mm）

0.15

Minimum central strengthening steel wire dia.(mm)

最小中心加强件钢管的直径（mm）

2

Maximum weight (kg/km)

最大重量（kg/km)

300

Maximum core dia. (mm)

最大核心直径（mm）

9.5

Maximum number of fiber per loose tube

每个松套管光纤的最大数量

6

Maximum loose tube dia. (mm)

最大松套管直径

3

Bending radius under load (mm)

负载下的弯曲半径

<300

Minimum tensile load (N)

最小拉伸载荷（N）

2000

Minimum crush resistance (N/ 10 cm )

最小抗扯裂强度（N/10cm)

3000

1.6*

Identification 标记

Following information shall be embossed or printed on the cable sheath at intervals of 1 m throughout the whole length of the cable to enable the identification of cable. The embossed or printed marking shall be distinct to naked eye from a distance of not less than 50 cm .

以下信息必须压印或着喷印在光缆护套上，每隔一米一个，以便能辨认光缆，这个印上或者压上的字体必须能让裸眼在不小于50厘米的地方看清楚

（i)光缆的型号和尺寸

(ii)连续长度标识

(iii)生产年份

(iv)生产商的名字

(v)用户名字

(vi)标明光缆的符号

1.7

Sealing and Marking Ends 在两端封帽和标记

After testing, the ends of each length of cable shall be enclosed in securely attached, tightly fitting caps having wall thickness and overall length of not less than 2 mm and 50 mm respectively.

测试后，每条光缆两端应该密封帽紧紧的套起来，密封帽的壁厚不小于2毫米，总长不小于50毫米

1.8

Colour Code 色标

The colour code for the identification of fiber & loose tube shall be in the following order.

光纤色谱如下:

Clause No.

要求

Bidder shall state as :

Fully Compliant / Partially Compliant/Non Compliant

1.8.1

Fiber Color Code

Fibre Number

Colour code

1

Blue蓝

2

White白

3

Yellow黄

4

Green绿

5

Grey灰

6

Red红

1.8.2

Loose tube colour code 松套管色标

Same colour code system of fibre shall be followed for loose tubes.

和光纤色标颜色相同

1.9

Tests for Geometrical, Optical & Transmission Characteristics

几何、光学性能和传输特性测试

Tests on the finished cables shall be made to prove compliance with all requirements of this specification. The Bidder shall submit full details of quality assurance procedures, which shall ensure that the cable fully comply with the requirements of the specification. The Bidder shall guarantee that the materials used for production of the fibers and coating shall be of the same origin for all cables. Combination of fibers and coating from different manufacturers/suppliers is not acceptable.

对于成品光缆的测试必须符合技术规范的要求，投标人必须提交所有质量保证工序的详细清单。投标人也要保证生产光纤的材料和外包材料是出自同一厂家，不同生产商的分包不被许可

1.9.1

Geometric tests shall include the following : 几何测试包括以下几点

- Mode field diameter.            光纤模场直径

- Cladding diameter                  包层直径

- Mode field concentricity         模场同心度

- Cladding non-circularity          包层失圆率

- Primary coating diameter.(Measuring method: Microscope)

起始附著层直径（检测方式：显微镜）

1.9.2

Optical properties test of the fiber shall include the following :

光学特性测试包括以下几点：

- Refractive index profile                                折射率分布

- Maximum theoretical numerical aperture.        最大理论直径孔径

- Cut off wavelength