The CoBrite DX2 is a dual-port, ultra-stable C/L-band tunable laser source purpose-built for professional optical test and measurement. With independent wavelength tuning across C-band (190.7–196.65 THz / 1524.5–1572 nm), L-band (186–191.1 THz / 1568.8–1611.7 nm), and optional C+L combined band, the DX2 is ideally suited for:

• Dense Wavelength Division Multiplexing (DWDM) transport testing — channel-by-channel validation aligned to the ITU-T G.694.1 frequency grid
• Coherent optical transmission — transmitter and LO testing for 100G, 400G, and 800G systems using QPSK, 16-QAM, and 64-QAM modulation
• Optical device validation — characterisation of passive and active components including AWGs, filters, modulators, and photonic integrated circuits (PICs)
• General-purpose photonics R&D — interferometry, spectroscopy, fibre sensing, and quantum optics experiments

Its compact 1 HE half-width form factor (45 × 136 × 179 mm, 1.3 kg) enables seamless integration into standard 19″ telecom racks and optical lab benches, while its independent dual-port architecture delivers the multi-channel capability that single-port instruments cannot provide.

What makes the DX2 different from the DX1 and DX? The CoBrite DX1 is a single-port, USB-powered bench-top unit (0.5 kg) — the most compact and cost-effective option. The CoBrite DX2 is a dual-port, rack-mountable unit (1.3 kg, 1 HE half-width) — the right choice when two independent laser outputs are needed without full rack space. The CoBrite DX is a multi-port rack unit (up to four ports, 2 HE half-width) — suited for high-channel-count telecom testbeds. The DX2 occupies the mid-tier: more capability than DX1, more compact than DX.

Engineered for Dual-Channel Excellence

Dual-Port Configuration — Two fully independent laser ports allow simultaneous multi-wavelength output, enabling coherent transmitter + LO setups, dual-channel DWDM component testing, and multi-band optical measurements — all from a single instrument. Each port is independently tunable in wavelength and power.

Ultra-Narrow Linewidth (<25 kHz) — The available ultra-narrow linewidth variants deliver spectral purity essential for coherent modulation formats (QPSK, 16-QAM, 64-QAM), local oscillator applications, and high-resolution interferometric measurements. A broad-linewidth LO is a primary cause of BER degradation in coherent systems; the DX2 eliminates that source of error.

Broad Frequency Tuning — Full coverage of C-band (190.7–196.65 THz), L-band (186–191.1 THz), and optional C+L combined band with 1 MHz tuning resolution on ultra-narrow variants. Aligned to the ITU-T G.694.1 DWDM frequency grid for telecom-standard channel testing.

Compact Rack Design — The 1 HE half-width 19″ chassis (45 × 136 × 179 mm, 1.3 kg) is one of the most space-efficient dual-port tunable laser platforms available. Two DX2 units occupy the same rack space as a single full-width 1U instrument — enabling high-density multi-channel configurations without sacrificing rack space.

Precise Power Control — Stable, adjustable output power across C-band (10–16 dBm) and L-band (9–14.5 dBm) ensures consistent, repeatable signal injection for system-level validation, component characterisation, and production testing.

Remote Operation Ready — Dual connectivity via Ethernet and USB, SCPI-style command interface, and browser-based GUI with no software installation required. Access the DX2 from any device on the same network — PC, tablet, or smartphone — for real-time control and monitoring in lab and remote environments.

Why It Delivers More

Multi-Channel Efficiency

Two independent ports enable parallel testing at two wavelengths simultaneously — doubling throughput compared to a single-port instrument without requiring a second chassis. Each port is fully configurable independently, allowing different wavelengths, power levels, and band selections on Port 1 and Port 2 at the same time.

Spectral Purity for Demanding Applications

Sub-25 kHz linewidth on ultra-narrow variants ensures that the laser source does not introduce phase noise penalties in coherent detection experiments or production BER testing. Stable frequency and power output across temperature cycles (0–40°C operating range) guarantees measurement repeatability in shared lab environments.

Compact Yet Powerful

At 1 HE half-width, the DX2 occupies minimal rack space while delivering dual-channel capability. At 1.3 kg, it is portable enough for field deployment and light enough to relocate between lab benches. Two DX2 units can be stacked in a single 1 HE full-width rack slot for four-channel operation.

Automation and Control

Full SCPI command support via USB and Ethernet enables seamless integration with Python (PyVISA), LabVIEW (NI-VISA), MATLAB (Instrument Control Toolbox), and custom automation frameworks — suitable for production test lines, automated research workflows, and remote lab management. The browser-based GUI provides immediate manual control with no driver installation.

Telecom Equipment OEMs

Telecom equipment manufacturers use the CoBrite DX2 for multiplexer/demultiplexer calibration, transponder validation, and end-to-end DWDM system characterisation for next-generation 100G, 400G, and 800G networks. The dual-port architecture enables simultaneous channel testing — reducing test cycle time and increasing production throughput.

Typical devices tested: DWDM MUX/DEMUX, coherent transponders, optical amplifiers, wavelength-selective switches (WSS), reconfigurable OADMs (ROADMs), and WDM transceivers.

Network Carriers and Service Providers

Network operators use the DX2 for ITU-T G.694.1 DWDM grid verification, channel power monitoring, and coherent link simulation — ensuring reliability and performance compliance in backbone, metro, and access networks before deployment. The independent dual-port control enables simultaneous carrier and interferer injection for crosstalk and isolation testing.

Optical Component Vendors

Passive and active optical component manufacturers deploy the DX2 for production-line and R&D characterisation of:

• Arrayed waveguide gratings (AWGs) and echelle grating multiplexers
• Optical bandpass and notch filters
• Erbium-doped fibre amplifiers (EDFAs) and Raman amplifiers
• Optical isolators, circulators, and couplers

The DX2’s high spectral stability, precise power control, and SCPI automation make it suitable for both manual characterisation and fully automated swept-wavelength test sequences on production lines.

Academic Research Institutes

Photonics research groups at IITs, national optical laboratories, DRDO establishments, and private research universities use the DX2 for:

• Advanced modulation format studies (128-QAM, 256-QAM, OFDM)
• Nonlinear fibre effects research (four-wave mixing, stimulated Raman scattering)
• Quantum optics experiments requiring two independently tunable narrow-linewidth sources
• Coherent detection algorithm development and DSP validation

The DX2’s SCPI scripting support enables high-throughput parametric sweeps and automated data collection — critical for publication-quality research workflows.

Photonics R&D Laboratories

Industrial and institutional photonics R&D labs use the DX2 for:

• DSP algorithm testing and IQ modulator characterisation
• Coherent optical system prototyping under realistic signal conditions
• Silicon photonic chip and photonic integrated circuit (PIC) testing
• Fibre Bragg grating (FBG) sensor interrogation and distributed fibre sensing

The dual-port capability allows simultaneous probe and reference signal generation — essential for interferometric and heterodyne measurement setups.

System Integrators and Test Laboratories

Test labs and system integrators use the DX2 as a stable dual-output laser platform for:

• Bit error rate (BER) and Q-factor measurements in multi-span coherent fibre link simulations
• Forward error correction (FEC) validation and optical SNR margin testing
• Local oscillator + transmitter setups for coherent receiver sensitivity benchmarking

The DX2’s flexibility across telecom, research, and industrial validation makes it one of the most versatile dual-port tunable laser platforms available in the Indian market.

Why Choose United Spectrum Instruments?

As the official authorised distributor of ID Photonics GmbH’s CoBrite laser sources in India, United Spectrum Instruments provides comprehensive end-to-end support — from pre-sales product selection to post-deployment technical assistance — for test labs, telecom providers, defence establishments, and research institutions across the country.

What you get when you buy through United Spectrum:

• Genuine, warranty-backed CoBrite DX2 instruments with ID Photonics GmbH manufacturer backing
• Application-specific configuration consultation: port count, variant selection, band configuration, and power requirements
• Integration support for Python, LabVIEW, and MATLAB automation environments
• After-sales technical support for calibration, SCPI command queries, firmware updates, and troubleshooting
• GST-inclusive pricing, MSME-registered invoicing, and full documentation for institutional procurement

Pan-India coverage: We support customers in Chennai, Bengaluru, Hyderabad, Mumbai, Pune, Delhi NCR, Kolkata, and across India — including IITs, NITs, DRDO establishments, ISRO facilities, optical component manufacturers, and telecom OEMs.

Our goal is to empower Indian labs, telecom providers, and research institutions with advanced tunable laser technologies that are reliable, configurable, and backed by local expertise.