Name: China OEM Tight-Buffered Fiber Optic Cable Manufacturers Suppliers Factory - Glory Optical
Brand: GLORY OPTICAL
SKU: 303922848

In modern FTTH, FTTA, and enterprise indoor cabling deployments, a tight-buffered fiber optic cable serves as the critical last-link medium - connecting distribution points directly to end-user equipment or antenna nodes. Unlike loose-tube designs, the tight-buffer structure bonds a 0.9 mm thermoplastic layer directly to the 250 µm coated fiber, giving each strand its own rigid-yet-flexible sheath that can be stripped and terminated on-site without specialty gel-cleaning tools.

Glory Optical's tight-buffered series supports OM1 through OM5 multimode fibers for short-reach, high-bandwidth links, as well as G.652D and G.657A2 single-mode fibers for longer runs and bend-sensitive routing. The G.657A2 variant offers a 7.5 mm minimum bend radius, making it ideal for tight conduit bends and wall-cavity routing common in residential FTTH installations.

Three cable configurations are available: Simplex (single fiber, 0.9–3.0 mm OD) for pigtail manufacturing and patching; Duplex (two parallel fibers) for bidirectional links and patch-cord production; and Figure-8 (two fibers bonded in a figure-eight cross-section) for neat dual-fiber routing where a flat profile aids stapling and trunking along walls and ceilings. All variants are offered in PVC or LSZH outer jackets to satisfy building fire codes and environmental compliance requirements.

Technical Specifications

Parameter	Specification
Fiber Type	OM1 / OM2 / OM3 / OM4 / OM5 multimode & G.652D / G.657A2 single-mode
Core Count	1 / 2 / 4 / 8 / 12 / 16 / 24 fibers
Outer Diameter	0.9 mm · 2.0 mm · 3.0 mm (custom intermediate OD available)
Cable Configuration	Simplex / Duplex / Figure-8
Outer Jacket Material	PVC (standard) / LSZH (low-smoke zero-halogen)
Filling Material	None - direct-termination ready
Long-term Tensile Strength	3 – 80 N
Short-term Tensile Strength	6 – 300 N
Min. Bend Radius (long-term)	≥ 20 × OD
Min. Bend Radius (short-term)	≥ 10 × OD
Operating Temperature	−30°C to +80°C
Storage Temperature	−40°C to +80°C
Net Weight	3 – 14 kg/km
Standard Reel Length	100 m / 500 m / custom km reels
Jacket Color Options	Yellow (SM) · Orange (OM1/OM2) · Aqua (OM3) · Violet (OM4) · Lime (OM5)

Tight-Buffered vs. Loose-Tube: Key Differences

Characteristic	Tight-Buffered (This Product)	Loose-Tube
Direct Termination	No gel cleaning needed	✗ Gel must be removed first
Minimum OD	From 0.9 mm	Typically ≥ 2.0 mm (with tube)
Flex in Tight Spaces	Excellent - preferred for indoor routing	Moderate
Lateral Stress Isolation	Moderate (no gel cushion)	High (gel absorbs micro-bend)
Long-Distance Waterproofing	Relies on jacket; no flooding compound	Flooding gel, excellent for OSP
Micro-Bend Attenuation*	< 0.05 dB/km added (1310 nm, −20°C)	Variable by design
Typical Use Case	Indoor last-drop, FTTA, patch-cord base	Outdoor trunk, long-haul duct

* Tight-buffer layer directly absorbs lateral micro-bend stress - no air gap - resulting in stable attenuation in vibration-prone environments (raised-floor data centers, transit facilities).

Application Scenarios

🏠

FTTH Last-Drop Indoor Run

From building distribution point to subscriber ONT. 0.9 mm and 2.0 mm variants thread through wall cavities, skirting channels, and micro-conduits with minimal disruption.

📡

FTTA Indoor Antenna Feeder

Connects BBU to indoor DAS RRU nodes. Figure-8 profile routes cleanly along cable trays and ceiling grids, meeting strict bend-radius requirements near mounting hardware.

🏢

Horizontal Cabling (IDF → Workstation)

Simplex or duplex runs from floor distribution frame to wall outlets in commercial buildings. LSZH jacket satisfies plenum-adjacent fire safety requirements.

🖥️

Patch Cord & Pigtail Manufacturing

The 0.9 mm tight-buffered strand is the standard factory-terminated base material for LC, SC, FC, and ST pigtails and jumpers - compatible with all common connector platforms.

🔌

Data Center Rack Interconnects

Short-reach equipment-to-equipment links inside cabinets. Small OD reduces congestion and improves airflow; LSZH jacket meets data-center fire code requirements.

🏗️

Riser & Conduit Vertical Runs

Figure-8 duplex structure simplifies Velcro-tie attachment in narrow risers. Rated operating temperature −30°C to +80°C covers unheated service shafts.

Features

Ultra-compact OD from 0.9 mm - fits the smallest conduits and wall cavities
Direct termination without gel cleaning, cutting on-site labor time significantly
Three cable configurations: Simplex, Duplex, Figure-8 for any routing scenario
Supports OM1–OM5 multimode and G.652D / G.657A2 single-mode fiber
PVC or LSZH jacket for standard or flame-retardant indoor environments
Wide operating range: −30°C to +80°C; storage to −40°C
Tight-buffer layer reduces micro-bend attenuation in vibration environments
Compatible with LC / SC / FC / ST / E2000 connector platforms
Factory-configurable: custom fiber count, jacket color, reel length
OEM logo printing on reel and outer packaging available

Installation Guidelines

1

Maintain a bend radius ≥ 20× OD during long-term routing; use bend-protection guides or conduit sweeps at all direction changes to prevent micro-cracks.
2

Keep pulling tension within the rated short-term limit (6–300 N depending on cable OD). Exceeding the limit - even briefly - can cause invisible fiber fractures that appear as elevated attenuation months later.
3

In sub-zero environments (below −20°C), pre-condition the cable at room temperature for at least 4 hours before installation. LSZH compound stiffens at low temperatures and is susceptible to cracking if flexed while cold.
4

Before connector termination, wipe the stripped buffer-layer end with an IPA cotton swab. The 0.9 mm diameter is compatible with standard LC/SC/FC/ST crimping boots - no special tools required beyond a conventional fiber cleaver and fusion splicer.
5

Fit dust caps on all unterminated ends. Store finished reels with a minimum coil diameter of 300 mm in a dry, UV-protected environment.
6

For vertical riser sections, add support clamps or cable ties every 1.5–2 m to prevent continuous gravitational stress on the fiber bundle.

Questions & Answers

Q1: What is the key advantage of tight-buffered construction over loose-tube for indoor runs?

The tight-buffer layer bonds directly to each fiber at 0.9 mm diameter, eliminating the free air-gap and filling compound found in loose-tube cables. This means fibers can be directly stripped and connectorized on-site - no gel cleaning required - while maintaining excellent flexibility for tight bends inside walls, ceilings, and cable trays.

Q2: Which outer diameter and configuration should I choose for FTTH last-drop wiring?

For residential FTTH drops, the 2.0 mm Simplex or Figure-8 in G.657A2 single-mode is the most popular choice. G.657A2 tolerates a 7.5 mm bend radius, critical for threading through wall plates and 90° conduit elbows. For patch-cord manufacturing, the 0.9 mm Simplex is the standard factory-terminated form factor.

Q3: What is the difference between PVC and LSZH jacket, and when should I specify LSZH?

PVC is cost-effective and suitable for general indoor routing in unoccupied spaces. LSZH (Low Smoke Zero Halogen) is required in high-occupancy areas - shopping centers, airports, metro stations, hospitals - where, in the event of a fire, the cable must not emit toxic halogen gases or dense smoke that impair evacuation. LSZH versions also meet IEC 60332-1 single-cable flame propagation testing.

Q4: Can you supply pre-terminated pigtails or customized reel lengths?

Yes. We offer full OEM/ODM customization including:
Pre-terminated pigtails with LC / SC / FC / ST / E2000 connectors (UPC or APC polish)
Custom reel lengths from 50 m sample spools to multi-km production reels
Jacket color matching (yellow, orange, aqua, violet, lime, or RAL custom color)
Brand printing on reel labels and outer packaging
Minimum order for standard specifications is 1 reel; samples are available on request.

Q5: What connectors are compatible with the 0.9 mm tight-buffered strand?

The 0.9 mm OD is the industry-standard dimension for fiber pigtails and patch cords. It is compatible with LC, SC, FC, ST, E2000, MU, and MPO/MTP connector housings using their respective 0.9 mm crimp boots. No diameter adapters or special tooling are required beyond a standard fiber optic termination kit.

Our Quality Promise

Comprehensive 3-Year Warranty

We confidently back all our products with a 3-year warranty. Our specific service policy is: within one year for quality issues, we take full responsibility for returns; within two years, for replacements; and within three years, for repairs.

Clear & Competitive MOQ

We welcome both trial and bulk orders. Our standard Minimum Order Quantity (MOQ) is 50 units. We also offer free samples for testing to help you evaluate our quality with confidence.

Fast & Reliable Logistics

We guarantee delivery within 10 days for standard items. Our logistics advantage includes cost-effective door-to-door service to simplify shipping for you.

Our Foundation

Backed by 18 years of experience since 2008, we control quality from our own factory, accept OEM/ODM requests, and maintain ready stock for wholesale. We focus on delivering the optimal balance of price and quality directly to end customers worldwide.

Your trust is our priority. Partner with us for dependable fiber optic solutions supported by clear promises.

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