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Description

980 nm High Stability Single-Mode Pump Laser Source – Desktop BENCHTOP Platform

The Connet VENUS / VLSS-980-B series is a high-stability 980 nm single-mode pump laser source engineered for demanding fiber laser and fiber amplifier pumping applications. Designed as a turnkey benchtop instrument, it combines high output power, excellent stability, and precise control in a compact desktop enclosure. Typical configurations provide up to 1400 mW of output power around 975 nm, making this source a reliable choice for pumping EDFAs, EYDFA systems, ytterbium-doped fiber amplifiers, and other laboratory or test setups requiring stable 980 nm pump light.

At the core of the unit is one or two high-power single-mode pump laser diodes with fiber Bragg grating (FBG) wavelength locking in the 980 nm band. This internal FBG stabilization helps maintain a narrow spectral width (typically around 0.5 nm FWHM) and a well-defined peak operating wavelength near 974/976 nm. In combination with the high side‑mode suppression ratio (SMSR) and integrated optical isolation, the source delivers a clean and stable optical signal ideally suited for use as a pump in low‑noise fiber amplifiers and mode‑locked fiber laser systems around 1.0 µm and 1.5 µm.

A key strength of this series lies in its output power stability and protection features. The output power stability is typically better than 1% (after warm‑up at 25 °C), enabled by an optimized combination of automatic temperature control (ATC), automatic power control (APC), and robust thermal and structural design. Because 980 nm pump diodes are particularly sensitive to amplified spontaneous emission (ASE) and back‑reflected light from the downstream fiber network, the source can be configured with targeted pump protection functions. These intelligent protection measures help safeguard the laser diode against damage, significantly enhancing operational reliability and lifetime in real‑world fiber amplifier setups and experimental research environments.

The benchtop package emphasizes ease of use. A high‑definition LCD display provides a clear readout of real‑time output power and operating status, while simple front‑panel keys or controls allow intuitive operation. Users can switch between coarse and fine power tuning modes to set the desired output level with high resolution across the full 0–100% power range. This plug‑and‑play design minimizes setup time: after fiber connection and power‑on, the unit quickly stabilizes and is ready for precise pumping or measurement tasks without complex configuration.

The optical output is delivered through high‑quality single‑mode fiber or polarization‑maintaining fiber, depending on configuration, typically with more than 1 m of pigtail length. An FC/APC connector is standard to reduce back‑reflection and improve long‑term stability, with other connector options available upon request. This makes integration straightforward in existing fiber laser benches, EDFA platforms, and general‑purpose optical test setups where low back‑reflection and robust connectivity are essential.

From a system integration perspective, the VENUS / VLSS-980-B series is designed to fit seamlessly into laboratory and industrial environments. The universal 100–240 VAC input and low power consumption around 10 W simplify power provisioning, while the operating temperature range from 0 to +50 °C allows deployment on standard optical tables and in typical lab conditions. For automated test and remote control scenarios, the source can be optionally equipped with an RS‑232 communication interface and dedicated control software, enabling computer‑based monitoring, scripting, and integration into larger measurement or production setups.

In comparison to many standard 980 nm pump modules and OEM laser heads, this desktop solution offers the advantages of an all‑in‑one, fully protected, and user‑friendly pump platform. Instead of handling raw pump diodes or unprotected butterfly modules, users gain a ready‑to‑use instrument with integrated drive electronics, thermal management, wavelength locking, and ASE feedback protection. This significantly reduces the engineering overhead for building stable EDFA or YDFA systems and makes the source equally attractive for research laboratories, university optics groups, and development teams in the telecom, sensing, and laser technology sectors.

Typical ordering configurations include output powers such as 300 mW, 400 mW, 500 mW, up to 1400 mW, with operating center wavelengths around 974 nm or 976 nm. Users can specify single‑mode or PM fiber output, benchtop or module packaging, and whether pump feedback protection is enabled, allowing the instrument to be tailored precisely to the requirements of a given fiber laser or amplifier design. This combination of configurable performance, robust protection, and convenient benchtop operation positions the 980 nm high‑stabil<

Connet VENUS 980nm High Stability Single-Mode Pump Laser Source

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Specifications

Center Wavelength: 0.985 um
Output Power: 1400 mW
Dimensions: 340(L) x 240(W) x 100(H) mm
Output Power Range: 90 to 1400 mW
Peak Operating Wavelength: 970 to 985 nm
Spectral Width (FWHM): 0.5 nm
SMSR (min.): 20 dB
Output Isolation (typ.): 30 dB
Stability Of Output Power: 1%
Output Power Tunable Range: 0 to 100%
Part No.: VLSS-980-B
Output Fiber Type: SMF or PMF
Length Of Output Fiber: >1 m
Output Fiber Connector: FC/APC (other options available)
Operating Voltage: 100 to 240 V AC
Power Consumption: 10 W
Operating Temperature: 0 to +50 ℃
Storage Temperature: -40 to +85 ℃
Output Power Tunable Mode: Coarse / Fine
Output Isolation: 30 dB

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Features

  • High-Stability 980 nm Pump Laser Source – Precision benchtop single-mode laser centered in the 970–985 nm band (typ. 974/976 nm) for reliable fiber amplifier pumping and research applications.
  • Adjustable High Output Power up to 1400 mW – Continuously tunable output power from 0–100% with coarse and fine adjustment modes, supporting typical power levels of 400 mW, 600 mW, 900 mW and up to 1400 mW for demanding EDFA/EYDFA and ytterbium-doped fiber amplifier systems.
  • Ultra-Stable Power with ≤1% Stability – Advanced ATC (Automatic Temperature Control) and APC (Automatic Power Control) circuitry combined with optimized thermal and structural design ensure long-term power stability better than 1% (after warm-up at 25 °C).
  • Narrow Linewidth & Spectrally Locked Operation – FBG wavelength-locked pump diodes with typical center wavelength around 975 nm and spectral width < 0.5–1 nm (FWHM), delivering stable, low-drift operation ideal for precision optical experiments and amplifier pumping.
  • Single-Mode or Polarization-Maintaining Fiber Output – Available with high-quality SMF or PMF output fiber (>1 m length) to match a wide range of fiber amplifier and fiber laser architectures in the 1.0 µm and 1.5 µm bands.
  • High Output Isolation for Enhanced Reliability – Integrated optical isolation with typical isolation ≥30 dB (ASE feedback isolation) to protect the pump diode from back-reflected light originating from EDFAs, EYDFA stages and lab setups.
  • Dedicated ASE Feedback Protection Options – Targeted pump protection solutions available (ordering option for feedback protection) to mitigate active ASE and other reflections that can cause premature failure in fiber amplifiers and high-power lab systems.
  • Precision Front-Panel Control with LCD Display – High-definition LCD screen clearly displays output power and operating status, with intuitive front-panel interface for quick setup, monitoring and fine power optimization.
  • RS232 Remote Control & Software (Optional) – Optional RS232 communication interface and control software allow remote configuration, monitoring and integration into automated test and measurement setups.
  • Plug-and-Play Benchtop Design – Compact benchtop package (approx. 340 mm × 240 mm × 100 mm) with universal 100–240 VAC operation for easy integration into optical labs, R&D benches and production test environments.
  • Low Noise Performance for Sensitive Experiments – Designed for low power and intensity noise, making it suitable for high-power, low-noise EDFAs, mode-locked fiber lasers around 1.0 µm and 1.5 µm, and other noise-sensitive laboratory applications.
  • Wide Operating Temperature Range – Stable performance over 0 to +50 °C operating temperature and −40 to +85 °C storage range, supporting reliable use in varied lab and light industrial environments.
  • Flexible Output Options and Configurations – FC/APC output connector as standard (other connector types available on request), custom output power levels on request, and multiple ordering configurations: benchtop (B) or module (M), with or without feedback protection.
  • Ideal for Fiber Amplifier and Laser Pumping – Optimized for high-power, low-noise EDFA/EYDFA pumping, ytterbium-doped fiber amplifiers, mode-locked fiber lasers, and general test & measurement in advanced photonics research.
  • Reliable, Long-Life Pump Solution – Use of high-quality, FBG-stabilized single-mode pump diodes, robust thermal management and integrated protection schemes help maximize lifetime and minimize downtime in continuous or long-duration operation.

Applications

Applications of Connet VENUS / VLSS-980-B 980 nm High-Stability Single-Mode Pump Laser Source
  • Erbium-Doped Fiber Amplifier (EDFA) Pumping
    Widely used as a stable 980 nm pump source for C-band and L-band EDFAs in metro, long-haul, and ultra-long-haul optical communication systems, where low-noise, high-stability pumping is critical to maintain amplifier gain and noise figure performance.
  • Erbium-Ytterbium Co-Doped Fiber Amplifier (EYDFA) Pumping
    Provides the required 980 nm pump for Er/Yb co-doped fiber amplifiers used in high-power optical transmission, CATV, FTTH, and optical distribution networks, where efficient conversion and thermal stability are required.
  • Ytterbium-Doped Fiber Amplifier and Fiber Laser Pumping (~1.0 µm Band)
    Used as a pump source for ytterbium-doped fiber amplifiers and fiber lasers operating around 1.0 µm, enabling high-power output and efficient gain for industrial, medical, and scientific laser systems.
  • High-Power, Low-Noise EDFAs for Test and Measurement
    Ideal for building and driving high-power, low-noise EDFA stages in optical test benches, optical component characterization, optical time-domain reflectometry (OTDR) setups, and system margin testing in R&D and production environments.
  • Mode-Locked Fiber Lasers at 1.0 µm and 1.5 µm
    Serves as a stable pump for mode-locked fiber lasers in the 1.0 µm and 1.5 µm bands, supporting generation of ultrashort pulses for spectroscopy, nonlinear optics experiments, time-resolved measurements, and ultrafast photonics research.
  • Single-Frequency and Narrow-Linewidth Fiber Lasers
    Suitable as a pump for single-frequency or narrow-linewidth fiber lasers (including FBG- and cavity-stabilized designs) where pump stability, low noise, and wavelength-locked 980 nm operation are needed to maintain spectral purity and frequency stability.
  • Seed and Master Oscillator Power Amplifier (MOPA) Systems
    Used as a pump in pre-amplifier and booster stages of MOPA fiber laser architectures for coherent communications, LIDAR transmitters, and advanced sensing, where controlled gain and low ASE are essential.
  • Optical Communication and DWDM System Prototyping
    Employed in lab-built EDFAs and pre-amplifiers for dense WDM (DWDM) and coherent communication testbeds, enabling evaluation of channel loading, OSNR, gain flattening, and network performance under controlled pump conditions.
  • Optical Signal Regeneration and Repeater Design
    Integrated as the pump source in experimental optical repeaters and 3R (re-amplify, re-shape, re-time) regenerator prototypes, where reliable 980 nm pumping is necessary for repeatable gain and low noise accumulation over distance.
  • Nonlinear Fiber Optics and Supercontinuum Experiments
    Used as a pump for nonlinear fiber experiments such as four-wave mixing, Raman scattering, and parametric amplification in specialty fibers, and as a seed pump stage for supercontinuum generation systems operating in the 1.0–1.6 µm range.
  • Raman Fiber Amplifier Pre-Pump Source
    Can act as a stable pre-pump or auxiliary pump in combination with longer-wavelength Raman pumps, enabling flexible multi-stage Raman/EDFA hybrid amplification schemes in experimental setups.
  • Optical Coherence Tomography (OCT) System Pumping
    Used as a pump laser for fiber-based light sources (e.g., erbium- or ytterbium-doped broadband sources) in OCT systems at 1.0 µm or 1.3–1.5 µm, contributing to stable output power and improved imaging performance.
  • Fiber-Based Sensing and Distributed Sensing Systems
    Provides the pump for EDFAs and laser sources used in fiber Bragg grating (FBG) interrogation, distributed temperature sensing (DTS), and distributed acoustic sensing (DAS), where long-distance signal integrity and low noise are required.
  • Metrology, Frequency Standards and Optical Reference Sources
    Serves as a stable pump in reference laser and comb systems operating near 1.0 µm and 1.5 µm, where high stability and low RIN of the pump laser support precise frequency control and long-term reliability.
  • Quantum Optics and Quantum Communication Experiments
    Used to pump fiber lasers or parametric sources that generate entangled photons and single-photon-level signals in the telecom band, supporting quantum key distribution (QKD) and quantum network testbeds requiring highly stable pumping.
  • Research on Fiber Components and Passive Devices
    Acts as a reliable 980 nm source for characterizing WDM couplers, isolators, filters, pump combiners, FBGs, and other passive components designed for EDFAs and high-power fiber systems

Frequently Asked Questions

What is the Connet VENUS / VLSS‑980‑B 980 nm high‑stability single‑mode pump laser source used for?
The Connet VENUS (VLSS‑980‑B series) 980 nm high‑stability desktop single‑mode pump laser source is primarily used as a pump for fiber amplifiers and fiber lasers. Typical applications include high‑power, low‑noise erbium‑doped fiber amplifiers (EDFAs), erbium‑ytterbium‑doped fiber amplifiers (EYDFAs), ytterbium‑doped fiber amplifiers, mode‑locked fiber lasers in the 1.0 µm and 1.5 µm bands, and general test and measurement or lab experiments requiring a stable 980 nm pump. Its high output power (up to 1400 mW), low noise and excellent stability make it suitable for both research and small‑scale production environments.
What are the key technical specifications of the Connet VLSS‑980‑B pump laser source?
Key specifications of the VLSS‑980‑B 980 nm pump laser source include: - Output power: 90 mW to 1400 mW (typical options: 400 mW, 600 mW, 1400 mW; other powers on request) - Peak operating wavelength: typically 974 nm or 976 nm (operating range 970–985 nm; center wavelength specified when ordering) - Spectral width (FWHM): ≤ 1 nm (typically 0.5 nm) with FBG wavelength‑locked pump diodes - SMSR: ≥ 20 dB - Output isolation (ASE feedback): ≥ 30 dB - Power stability: ≤ 1% (measured at 25 °C, 30 minutes after warm‑up) - Output power tuning range: 0–100% with coarse and fine adjustment modes - Output fiber: Single‑mode fiber (SMF) or polarization‑maintaining fiber (PMF), length >1 m - Fiber connector: FC/APC standard, other connectors available on request - Supply voltage: 100–240 VAC, power consumption ~10 W - Operating temperature: 0 to +50 °C; storage: –40 to +85 °C - Mechanical size (benchtop): 340 (L) × 240 (W) × 100 (H) mm
How is the output power controlled and how stable is the 980 nm pump laser source?
The VENUS / VLSS‑980‑B 980 nm pump laser source uses a combination of active temperature control (ATC), automatic power control (APC) circuits, and optimized structural and thermal design to achieve high power stability. Users can adjust the output power from 0 to 100% of the rated level using both coarse and fine tuning modes through the front‑panel interface. The actual output power and status are shown on a high‑definition LCD display. Under typical lab conditions (25 °C, after 30 minutes of warm‑up), the output power stability is better than 1%, which is in line with or better than similar 980 nm benchtop pump sources from other manufacturers used for EDFA and YDFA pumping.
What fiber type and connector options are available for the Connet 980 nm pump laser source?
By default, the Connet VENUS / VLSS‑980‑B series offers either single‑mode fiber (SMF) or polarization‑maintaining fiber (PMF) pigtails with a length greater than 1 meter. The standard output connector is FC/APC, which is widely used in amplifier pumping to minimize back‑reflection. Other connector options (such as FC/PC or other industry‑standard terminations) can be provided on request. When ordering, you can specify whether you need SMF or PMF output, the connector type, and the desired center wavelength (e.g., 974 nm or 976 nm) to match your EDFA, EYDFA, or ytterbium‑doped fiber amplifier design.
How does the ASE feedback protection and pump protection option work, and when should I choose it?
In fiber amplifier and fiber laser systems, amplified spontaneous emission (ASE) and back‑reflected light from the gain fiber or optics can propagate back into the pump laser and cause premature failure. The VLSS‑980‑B series integrates isolation and pump protection circuitry to mitigate this risk. The specified output isolation (≥30 dB) refers to suppression of feedback ASE at the pump input. Additionally, Connet offers a targeted pump protection option, denoted in the ordering code as SP:1 (feedback protection enabled) versus SP:0 (none). The protection solution is tailored to the type of fiber laser or amplifier (EDFA, EYDFA, YDFA, etc.) and wavelength in use. For most practical EDFA or high‑power amplifier setups where back‑reflection is possible, it is strongly recommended to choose the protection option and consult Connet for the best configuration for your system.
How do I select and order the correct configuration of the Connet VLSS‑980‑B for my application?
The product is ordered using the format: VLSS‑974/976‑P‑‑, where: - "974/976" indicates the nominal operating wavelength you require (e.g., 974 nm or 976 nm). - "P" is the package type: B for benchtop (desktop unit with LCD and controls), M for module (OEM module form factor). - "" is the output power in mW, e.g., 300, 500, 1400 (other typical values: 400 mW, 600 mW; custom powers are available on request within the 90–1400 mW range). - "" is the feedback protection option: 0 = none, 1 = with pump protection. When specifying your unit, also indicate whether you need SMF or PMF output, the desired fiber connector type, and any remote control requirement (e.g., RS‑232 interface and control software). Supplying details of your amplifier or laser (type, wavelength, power, and expected reflections) helps the manufacturer recommend the most suitable protection and configuration.
Does the Connet VENUS 980 nm pump laser source support remote control and integration into automated test systems?
Yes. In addition to the front‑panel LCD and keypad interface, Connet can provide an RS‑232 communication interface and corresponding control software on request for the VLSS‑980‑B series. This allows users to monitor and control parameters such as output power, on/off state, and alarms from a PC or automated test setup. Similar 980 nm benchtop pump sources used in telecom and fiber‑laser labs often provide serial or Ethernet control; the RS‑232 option on the VENUS series offers comparable functionality and makes it easier to integrate the unit into larger amplifier test benches, production lines, or remote‑controlled research experiments.

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