Venus Series Narrow Linewidth Single-Frequency Fiber Lasers from Connet Laser

Shanghai Connet Laser Technology Co., Ltd. focuses on technological innovation, delivering cutting-edge photonic products & solutions for industrial lasers, LiDAR, fiber optic sensing, coherent telecom, cold atom physics and precision spectroscopy research & mass manufacturing.

After years of R&D accumulation, we have built three core product lines: multi-wavelength laser seed sources, high-power & polarization-maintaining fiber amplifiers, CW/pulsed fiber lasers. Our complete optical chain solutions serve high-end fields including spectral analysis, coherent beam combining, distributed fiber sensing, coherent LiDAR, quantum precision measurement.

This article introduces two flagship Venus single-frequency narrow linewidth fiber lasers: CoSF-1-1064-M low-noise mW-level seed laser at 1μm band, and VFLS-1550-B-SF-HP high-power single-frequency laser at 1.5μm band. Based on patented optimized traveling-wave cavity design, both products eliminate spatial hole burning & polarization hole burning, realizing mode-hop-free, ultra-low-noise single-frequency output.

CoSF-1-1064-M 1064nm Low-Noise Single-Frequency Fiber Laser (mW Module)

Ideal for Cold Atom Physics, Fiber Sensing, LiDAR & Precision Spectroscopy

CoSF-1-1064-M is a standardized narrow linewidth seed laser covering 1000–1200nm. Adopting proprietary traveling-wave cavity + ultra-narrow band fiber filter, it avoids multi-longitudinal mode, mode hop and burst noise common in linear cavity lasers. Dedicated polarization control delivers stable linear polarization output.

Key Advantages

1. Ultra-high spectral purity: Typical linewidth down to 0.1kHz, OSNR ≥60dB, SMSR >55dB;
2. Ultra-low noise performance: RIN < -135dB/Hz @10kHz, phase noise only 1×10⁻¹⁰ Rad/√Hz @1kHz, free of sudden noise spikes;
3. Long-term power stability: ±0.5% fluctuation within 15 mins, ≤±1% drift over 8 hours; built-in 35dB optical isolator against back-reflection interference;
4. Wide-temperature & shock-resistant compact housing, maintains single frequency under temperature shift & vibration;
5. Customizable wavelengths: 1018/1030/1053/1064/1083nm available, output power adjustable from 5~100mW;
6. PM fiber pigtail, PER ≥23dB, beam quality M²＜1.05.

Core Specifications (25℃ Standard)

• Wavelength range: 1000~1200nm (custom specified)
• CW output power: 5 ~ 100 mW single frequency
• Typical linewidth: 0.1 kHz
• Operating temp: 0℃ ~ 60℃; Storage: -20 ~ 65℃
• Dimension: 175 × 130 × 30 mm compact module

Typical Applications

Cold atom experimental setups, distributed vibration fiber sensing, fiber hydrophones, high-resolution laser spectroscopy, coherent communication seed source, compact coherent LiDAR

VFLS-1550-B-SF-HP High-Power Single-Frequency 1550nm Fiber Laser

Optimized for Long-Range LiDAR, Underwater Hydrophone, Microwave Photonics

This 1550nm high-power single-frequency module delivers 0.5~10W CW single-frequency output. It shares the same hole-burning-free all-fiber traveling-wave cavity architecture as our low-power seed lasers, balancing ultra-narrow linewidth and high output power for long-distance detection & high-power coherent systems.

Key Advantages

1. Same high-power amplification technology, max single-frequency output up to 10W, linewidth ≤1kHz, SMSR ≥50dB;
2. Industrial wide-temperature design: stable operation from -25℃ to 50℃, suitable for vehicle & field equipment;
3. Large-mode-area PM Panda fiber output, PER ≥13dB, power continuously adjustable 10%~100%;
4. Standard rack-mounted form factor, compatible with 19-inch 2U/3U instrument chassis;
5. 35dB built-in optical isolator, no mode hopping or noise degradation under strong optical feedback.

Core Specifications (25℃ Standard)

• Operating band: 1540 ~ 1565nm standard ITU wavelengths
• CW output power: 0.5 W ~ 10 W single frequency
• Spectral linewidth: ≤ 1 kHz
• Operating temperature: -25℃ ~ 50℃; Storage: -40 ~ 85℃
• Output fiber: PM LMA Panda fiber, FC/APC connector standard

Typical Applications

Long-range coherent LiDAR, seabed fiber hydrophone arrays, 5G RF-over-fiber microwave photonic links, long-haul coherent optical communication, high-power spectral measurement, industrial precision interferometry

Customization & Mass Production Support

Connet Laser supports fully customized solutions on special wavelengths, output power, package form factor, rack size and electrical control interfaces. We provide fast small-batch sampling, prototype customization for labs, and stable mass delivery for industrial customers. Every laser undergoes full testing on linewidth, noise and power stability with official test reports before shipment.
If you require complete datasheets, optical system evaluation or bulk quotation, please reach out to our photonicssource sales team.