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What payment methods do you accept?

We accept the following payment methods:Credit/Debit Cards: Visa, MasterCard, American ExpressPayPal: Secure online paymentWire Transfer: Bank transfer for bulk/wholesale ordersWestern Union: Available for international customersAll payments are processed securely. Your information is encrypted.

What is your shipping policy?

We offer worldwide shipping:Express (DHL/FedEx/UPS): 3-7 business daysAir Mail (China Post): 15-25 business daysSea Freight: Available for bulk wholesale ordersOrders processed within 1-2 business days after payment. Free shipping available for qualifying orders.

Do you offer OEM/ODM services for fiber optic products?

Yes, we offer OEM and ODM services:OEM: Custom branding with your logo and packaging on existing productsODM: Custom product design based on your specificationsCustomization: Custom cable lengths, connector types, and packagingMOQ varies by product (typically 50-100 units). Contact our sales team for a quote.

What is the difference between GPON and EPON?

GPON offers higher downstream bandwidth and better QoS. EPON provides symmetric bandwidth at lower cost. GPON supports split ratios up to 1:128 for wider coverage.

Which ONU/ONT is compatible with my OLT?

Our L880G and L801 series ONUs support XPON dual-mode and work with Huawei, ZTE, FiberHome and other major OLT brands. Contact support to confirm compatibility.

What is the difference between SC/APC and SC/UPC connectors?

SC/APC (Angled Physical Contact) and SC/UPC (Ultra Physical Contact) are two common fiber optic connector polish types. The key difference is the end-face angle.SC/UPC: Flat end-face with slight curve, return loss ≥50dB. Used for general-purpose data transmission. Blue color.SC/APC: 8° angled end-face, return loss ≥60dB. Used for RF video transmission (CATV) and PON networks. Green color.They are NOT interchangeable — mixing them can damage the connector end-face.

How do I choose the right fiber optic splitter for my network?

Choosing the right fiber optic splitter depends on several factors:Type: PLC splitters offer better performance for FTTx; FBT splitters suit smaller setupsRatio: Common ratios: 1×2, 1×4, 1×8, 1×16, 1×32, 1×64Package: ABS box (indoor), Mini steel tube (tight spaces), LGX cassette (rack mount)Connector: SC/APC for CATV, SC/UPC for dataFor GPON/EPON FTTH deployments, a 1×8 or 1×16 PLC splitter with SC/APC connectors is recommended.

What is the maximum distance for fiber optic transmission?

Fiber optic transmission distance depends on fiber type and equipment:Single-mode fiber (OS2): Up to 40km+ without amplificationMulti-mode fiber (OM1-OM5): 300m to 550m at 10GbpsGPON: Typically 20km reachEPON: Typically 20kmXGS-PON: Up to 40km1550nm wavelength has lower attenuation (≈0.2dB/km) vs 1310nm (≈0.35dB/km). For standard GPON FTTH, 20km is typical from OLT to ONU.

How do I configure an ONU/ONT for my fiber network?

Configuring an ONU/ONT involves these steps:Connect: Plug fiber cable into PON port, Ethernet to your router/PCPower on: Wait for PON LED to turn solid (optical signal received)Access web: Set PC to same subnet (192.168.1.x), open ONU IP (usually 192.168.1.1)Configure WAN: Set connection type (PPPoE, DHCP, or Static IP) per ISP requirementsRegister: Some ISPs require registration via serial number, LOID password, or MAC address

What is XGS-PON and how is it different from GPON?

XGS-PON (10 Gigabit Symmetric PON) is the next-generation PON technology offering 10Gbps symmetric bandwidth. Key differences from GPON:Speed: GPON = 2.5Gbps down / 1.25Gbps up. XGS-PON = 10Gbps both directionsWavelength: XGS-PON uses 1577nm down / 1270nm up (different from GPON's 1490nm/1310nm)Coexistence: XGS-PON can share the same fiber with GPON via WDMXGS-PON ONUs work with dual-mode OLTs but need an XGS-PON port for 10G speeds. Ideal for 4K/8K streaming, cloud computing, and enterprise use.

How Many Homes Can One OLT Port Serve?

In GPON networks, one OLT port typically serves 32 to 128 homes, depending on the split ratio. A 1:32 splitter is most common for FTTH deployments. With XGS-PON, one port can serve 256+ subscribers. Actual capacity depends on bandwidth per user — if each user needs 100Mbps, a GPON port (2.5Gbps down) handles ~25 users at peak. For our 2-port EPON OLT (L202), each port supports up to 64 ONUs, giving a total of 128 homes per device.

How Is GPON Data Secured on Fiber Optic Networks?

GPON uses AES-128 encryption to secure downstream data. Each ONU receives only its own data — the OLT encrypts traffic with a unique key per ONU. Upstream data is inherently secure because each ONU transmits in its assigned time slot. AES encryption is enabled by default in most OLTs like our EPON/GPON models. For additional security, MAC address filtering and ONU authentication are supported.

Is Fiber Optic Cheaper Than Copper in the Long Run?

Yes. While fiber optic cabling costs 20-30% more upfront, its total cost of ownership (TCO) over 10 years is 40-60% lower than copper. Fiber supports 40Gbps+ bandwidth vs copper's 10Gbps limit, has 25+ year lifespan (copper: 5-10 years), and needs no signal repeaters for up to 40km. For ISPs, the breakeven point is typically 2-3 years. Our single-mode fiber patch cables and splitters provide reliable long-term infrastructure.

Simplex vs Duplex Fiber Patch Cables: Differences & Buying Guide

When building or upgrading a fiber optic network, one of the most fundamental decisions you will face is choosing between simplex vs duplex fiber patch cables. While both types serve the job of transmitting light signals over glass or plastic fibers, their design, functionality, and ideal applications differ significantly. Selecting the wrong configuration can lead to inefficient bandwidth usage, unnecessary costs, or even complete network failure. This comprehensive guide breaks down everything you need to know about simplex and duplex fiber patch cables, including their structural differences, typical use cases, and practical buying tips to help you make an informed decision for your next project.

What Are Simplex and Duplex Fiber Patch Cables?

Before comparing them directly, it is essential to understand what each type of cable is designed to do. Both simplex and duplex cables are used to connect network devices, but they handle data transmission in fundamentally different ways.

Simplex Fiber Patch Cables

A simplex fiber patch cable consists of a single strand of glass or plastic fiber enclosed within a single jacket and connector. This configuration supports data transmission in only one direction. Simplex cables are typically terminated with a single connector on each end, such as an LC, SC, or ST connector. Because of their unidirectional nature, simplex cables are commonly used in applications where data flows from one point to another without requiring a return path, such as in broadcast video, security camera feeds, or point-to-point sensor connections.

Duplex Fiber Patch Cables

A duplex fiber patch cable is essentially two simplex cables joined together, either by a zip-cord design (two fibers bonded side-by-side) or by a common outer jacket. This configuration provides two separate optical paths, allowing for simultaneous bidirectional communication. Duplex cables are the standard choice for most enterprise network equipment, including switches, routers, and servers, because they enable both transmit (TX) and receive (RX) functions. The two fibers in a duplex cable are often color-coded for polarity, typically one blue and one beige or orange, to ensure correct connection.

Key Differences Between Simplex and Duplex Cables

Understanding the core differences between simplex vs duplex fiber patch cables is crucial for proper network design. Here are the primary factors that set them apart:

Number of Fibers: Simplex uses a single fiber, while duplex uses two fibers.
Data Flow: Simplex supports unidirectional transmission only; duplex supports bidirectional transmission.
Connector Count: Simplex cables have one connector per end; duplex cables have two connectors per end (or a single duplex connector housing two ferrules).
Common Applications: Simplex is used in CATV, FTTH (Fiber to the Home) drop cables, and single-direction sensor systems. Duplex is used in Ethernet networks, SANs, and telecom backbones.
Cost: Simplex cables are generally less expensive per unit length because they require less material. However, you may need two simplex cables to achieve bidirectional communication, which can equal or exceed the cost of a single duplex cable.
Cable Management: Duplex cables offer cleaner organization since both fibers are managed as one assembly, whereas using two separate simplex cables can lead to more clutter.

When to Use Simplex vs Duplex: Application Scenarios

Choosing between simplex and duplex depends entirely on your network architecture and the type of transceivers you are using.

Simplex Applications

Simplex fiber patch cables excel in scenarios where data flows in only one direction. Common use cases include:

Broadcast and Video Transmission: Simplex cables are often used to carry video signals from a camera to a monitor or recording device.
Fiber to the Home (FTTH): Many residential ONTs (Optical Network Terminals) use a single fiber for downstream data, with upstream transmission handled by a different wavelength on the same fiber (using WDM technology).
Industrial Sensors: Single-direction sensors, such as temperature or pressure gauges, send data back to a central controller via a simplex link.
Simplex Transceivers: Some BiDi (Bidirectional) transceivers use a single fiber for both transmit and receive by leveraging different wavelengths. In these cases, a simplex cable is the correct choice.

Duplex Applications

Duplex fiber patch cables are the standard for most modern Ethernet and data center networks. Typical applications include:

Enterprise LAN/WAN: Gigabit Ethernet, 10 Gigabit Ethernet, and higher-speed standards typically require two fibers (one for TX, one for RX).
Data Centers: Server-to-switch and switch-to-switch connections in data centers nearly always use duplex cabling for high-speed, full-duplex communication.
Telecom Networks: Long-haul and metro networks use duplex cables to support bidirectional traffic over separate fibers.
Storage Area Networks (SANs): Fibre Channel and other SAN protocols rely on duplex connections for reliable, high-speed data transfers.

How to Choose the Right Cable: A Practical Buying Guide

Selecting the correct fiber patch cable involves more than just choosing simplex vs duplex. Follow these practical tips to ensure you get the right product for your network:

1. Check Your Transceiver Type

The most important factor is the transceiver installed in your equipment. Standard transceivers (e.g., SFP, SFP+, XFP) typically have two ports: one for transmit and one for receive. These require a duplex cable. However, BiDi (Bidirectional) transceivers use a single port and require a simplex cable. Always verify your transceiver specifications before ordering.

2. Match Connector Types

Fiber patch cables come with a variety of connectors, including LC, SC, ST, FC, and MTP/MPO. Ensure that the connector on your cable matches the port on your device. For example, LC is common in data centers, while SC is often used in telecom and CATV applications. Duplex LC connectors are typically clipped together to maintain polarity.

3. Choose the Correct Fiber Mode

Both simplex and duplex cables are available in single-mode (OS1/OS2) and multimode (OM1, OM2, OM3, OM4, OM5) variants. Single-mode is best for long-distance applications (up to 10 km or more), while multimode is cost-effective for shorter distances (up to 550 meters for 10G). Make sure your cable's mode matches your network's requirements.

4. Consider Cable Length and Polarity

Measure the exact distance between devices and add some slack for routing. For duplex cables, pay attention to polarity — the two fibers must be arranged so that TX on one end connects to RX on the other end. Standards such as TIA-568 define polarity types A, B, and C. If you are using a prefabricated duplex patch cord, polarity is usually correct for point-to-point links. For more complex topologies, consult a polarity guide.

5. Evaluate Future-Proofing and Scalability

If you anticipate upgrading to higher speeds or different transceiver technologies in the future, consider whether a duplex cable will still be appropriate. Some emerging standards use parallel optics (e.g., SR4) requiring multiple fibers. In such cases, you may need a duplex cable with more fiber count or an MPO assembly. Planning ahead can save time and money down the line.

Common Connector Types and Compatibility

When buying simplex or duplex fiber patch cables, you will encounter several connector types. Here is a quick overview of the most common ones and their typical uses:

LC (Lucent Connector): A small form-factor connector widely used in data centers and enterprise networks. Duplex LC connectors are often held together by a clip. Ideal for high-density applications.
SC (Subscriber Connector): A push-pull connector commonly used in telecom and CATV. SC connectors are larger than LC but still popular for simplex applications like FTTH.
ST (Straight Tip): A bayonet-style connector often found in older networks and industrial applications. ST connectors are typically used with multimode fiber and simplex cables.
FC (Ferrule Connector): A screw-on connector used in high-vibration environments and precision applications like test equipment. FC connectors are usually simplex.
MTP/MPO: Multi-fiber connectors used for parallel optics and high-speed applications (40G, 100G, 400G). These are not simplex or duplex in the traditional sense but can be used with breakout cables to create duplex links.

Conclusion

Understanding the difference between simplex vs duplex fiber patch cables is the first step toward building a reliable, efficient fiber optic network. Simplex cables are ideal for unidirectional applications and BiDi transceivers, while duplex cables are the go-to standard for bidirectional Ethernet and telecom connections. When making your purchase, always verify your transceiver requirements, connector types, fiber mode, and cable length. By carefully considering these factors and following the practical buying guide outlined above, you can avoid costly mistakes and ensure optimal network performance. Whether you are setting up a small surveillance system or a large data center, choosing the right patch cable matters more than most people think.