1550 Optical Transmitter

A 1550 Optical Transmitter is a device utilized in fiber optic communication systems that converts electrical signals into optical signals at a wavelength of 1550 nm.

The main purpose of a 1550 Optical Transmitter is to enable long-distance transmission of data over fiber optic cables by converting electrical signals into optical signals.

The 1550 Optical Transmitter uses an electrical input signal and converts it into an optical signal through a process called modulation. The optical signal is then transmitted over a fiber optic cable.

The advantages of using a 1550 Optical Transmitter include low signal loss, high data capacity, resistance to interference, and the ability to transmit data over long distances without the need for repeaters.

Routine maintenance for a 1550 Optical Transmitter includes monitoring the power levels and wavelength stability, checking for any loose connections, and keeping the device clean from dust and debris.

This is a crucial choice that depends on your distance, budget, and performance requirements:

1550nm Directly Modulated Laser (DML) Transmitter:

How it works: The RF signal directly modulates the laser diode's current.

Best for: Cost-sensitive applications, CATV distribution networks, RFoG systems, and distances up to ~30-40 km.

Pros: Lower 1550nm optical transmitter price, simpler design, smaller footprint.

Cons: Higher chirp, which can limit transmission distance and performance in dense, long-haul DWDM systems.

1550nm Externally Modulated Laser (EML) Transmitter:

How it works: A continuous-wave (CW) laser feeds an external LiNbO₃ (Lithium Niobate) modulator, which is then modulated by the RF signal.

Best for: Long-haul telecom backbone (>80 km), DWDM/CWDM systems, applications requiring the highest CNR/CSO/CTB performance, and where very low chirp is essential.

Pros: Superior linearity, ultra-low chirp, enables much longer transmission distances.

Cons: Higher initial cost, larger size.

Simple Choice Guide:

Choose DML for standard CATV distribution and shorter links where budget is key.

Choose EML for maximum distance, backbone networks, or advanced multi-wavelength systems.

Yes, absolutely. JUNPU transmitters are designed to industry-standard specifications for CATV and broadcast optical transmission. They are fully compatible with standard DBC and SCM architectures used to minimize second-order distortion (CSO) in high-channel-count AM-VSB systems. Our units feature excellent linearity (CTB/CSO specs) and stable 1550nm output, ensuring seamless integration into your existing headend or hub. For specific compatibility verification, please provide your system's RF frequency plan, and our engineers can confirm optimal performance.

Our standard configuration uses SC/APC connectors, which provide low insertion loss and superior return loss critical for analog CATV systems to minimize reflections. We also offer FC/APC as a standard option. For OEM/ODM services, we can customize the connector type (e.g., LC/APC, E2000) to match your system requirements upon request.

1550nm optical transmitter price varies by model, output power, modulation type (direct vs external), number of ports, and features (e.g., SNMP, dual PSU). JUNPU offers competitive wholesale pricing: direct modulated models start lower for budget access networks, while external modulated units are higher for premium long-haul performance.

Prices depend on bulk quantity, customization, and current market. For accurate quotes, datasheets, or samples, please contact us with your project details (channels, distance, power needs)—our team responds within 24 hours.

Integration is straightforward for long-haul CATV:

Connect the 1550 optical transmitter output (FC/APC or SC/APC) to the EDFA input.

Use a high-power EDFA (e.g., JUNPU multi-port models) to boost the signal (gain 15-25 dB typical).

Transmit amplified light over single-mode fiber (SBS threshold adjustable on transmitter to avoid nonlinearities).

At remote sites, use optical receivers or further EDFAs for distribution.

External modulated models excel here (no chirp, high SBS). This setup supports 100+ km trunks with excellent CNR. JUNPU transmitters + EDFA combos are plug-and-play—see our EDFA WDM PON page for matched solutions or request integration guidance.

1550nm is the industry standard for long-range CATV because it has the lowest attenuation (approx. 0.2dB/km) in fiber. More importantly, 1550nm signals can be optically amplified by EDFA, allowing you to split the signal to thousands of nodes across a large city. 1310nm lacks this cost-effective amplification capability for large-scale networks.

Yes. Our latest 1550nm optical transmitters feature a bandwidth of up to 1.2GHz, providing full compatibility with DOCSIS 3.1 standards. This ensures your network is future-proofed for high-speed broadband and 4K/8K UHD video services.