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Description

Free Space Isolator for CWDM by DK Photonics

The Free Space Isolator for CWDM from DK Photonics is a high-performance optical component designed to protect sensitive laser sources and optical transmitters from detrimental back-reflected light. This isolator is engineered specifically for coarse wavelength division multiplexing (CWDM) applications, making it an essential element in modern fiber optic communication systems where signal integrity and stability are paramount.

Utilizing advanced optical design, the Free Space Isolator delivers exceptional isolation levels—up to 55 dB in dual-stage configurations—while maintaining impressively low insertion loss. Its polarization-dependent operation ensures optimal performance in systems where polarization control is critical. The isolator is available in both single-stage and dual-stage variants, catering to a wide range of isolation requirements and system architectures.

The compact, epoxy-free optical path construction not only enhances reliability but also minimizes the risk of contamination and outgassing, which is especially important in high-power or sensitive environments. With a clear aperture exceeding 0.90 mm and robust power handling up to 300 mW, this isolator is well-suited for integration into high-density laser diode packaging and advanced CWDM modules. Its versatile packaging options and multiple wavelength support (1470 nm to 1610 nm) allow for seamless adaptation to diverse system needs.

Qualified to Telcordia GR-1221-CORE standards, the DK Photonics Free Space Isolator is built for long-term reliability and consistent performance across a wide operating temperature range. Whether used in telecom networks, data centers, or laser-based instrumentation, this isolator provides a dependable solution for managing back-reflection and optimizing optical signal transmission.

Free Space Optical Isolator for CWDM High Isolation Low Loss

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Specifications

Wavelength: 1470 nm
Bandwidth: 6.5 nm
Power: 0.3 W
Isolation Range: 42 – 50 dB
Operating Wavelength: 1470, 1490, 1510, 1530, 1550, 1570, 1590, 1610 nm
Minimum Isolation At Center Wavelength (Single Stage, P Grade): >42 dB
Minimum Isolation At Center Wavelength (Single Stage, A Grade): >40 dB
Minimum Isolation At Center Wavelength (Dual Stage, P Grade): >55 dB
Minimum Isolation At Center Wavelength (Dual Stage, A Grade): >50 dB
Isolation (λc +/-6.5nm) (Single Stage, P Grade): >38 dB
Isolation (λc +/-6.5nm) (Single Stage, A Grade): >35 dB
Isolation (λc +/-6.5nm) (Dual Stage, P Grade): >42 dB
Isolation (λc +/-6.5nm) (Dual Stage, A Grade): >40 dB
Insertion Loss (λc +/-6.5nm) (Single Stage, P Grade): ≤0.25 dB
Insertion Loss (λc +/-6.5nm) (Single Stage, A Grade): ≤0.30 dB
Insertion Loss (λc +/-6.5nm) (Dual Stage, P Grade): ≤0.35 dB
Insertion Loss (λc +/-6.5nm) (Dual Stage, A Grade): ≤0.40 dB
Clear Aperture: >0.90 mm or >0.75 mm
Operating Temperature: -5 ~ +70 °C
Storage Temperature: -40 ~ +85 °C
Power Handling: 300 mW

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Features

  • High Isolation Performance: Achieves minimum isolation up to 55 dB (dual stage), ensuring superior protection against back-reflected light in optical systems.
  • Low Insertion Loss: Ultra-low insertion loss as low as 0.25 dB, maximizing signal transmission efficiency and minimizing power loss.
  • Polarization Dependent Design: Optimized for polarization-dependent applications, ideal for high-speed optical transmitters and pump lasers.
  • Multiple Wavelength Support: Available for CWDM wavelengths (1470, 1490, 1510, 1530, 1550, 1570, 1590, 1610 nm), supporting a wide range of optical communication needs.
  • Epoxy-Free Optical Path Option: Offers epoxy-free construction for enhanced reliability and long-term stability in demanding environments.
  • Compact and Versatile Packaging: Multiple package sizes and configurations available, enabling easy integration into various optical modules and systems.
  • High Power Handling: Supports up to 300 mW power handling, suitable for high-power laser applications.
  • Wide Operating Temperature Range: Reliable operation from -5°C to +70°C, with storage capability from -40°C to +85°C, ensuring performance in diverse environments.
  • Telcordia GR-1221-CORE Qualified: Meets stringent industry standards for reliability and quality assurance.
  • Applications: Perfect for CWDM systems, laser diode packaging, high-speed optical transmitters, and pump laser isolation.

Applications

  • Coarse Wavelength Division Multiplexing (CWDM) Systems
    Enhances channel isolation and minimizes crosstalk in CWDM networks, ensuring high signal integrity and reliable data transmission.
  • Laser Diode Packaging
    Protects sensitive laser diodes from harmful back-reflections, improving performance and extending the lifespan of laser sources.
  • High-Speed Optical Transmitters
    Prevents feedback and signal degradation in high-speed optical transmitter modules, supporting stable and efficient operation.
  • Pump Laser Protection in Optical Amplifiers
    Shields pump lasers in EDFA and Raman amplifiers from back-propagating light, maintaining amplifier efficiency and reliability.
  • Optical Communication Systems
    Ensures unidirectional light propagation in fiber optic links, reducing noise and enhancing overall system performance.
  • Optical Sensing Systems
    Improves measurement accuracy in fiber optic sensors by eliminating interference from reflected signals.
  • Research and Development in Photonics
    Used in laboratory setups for isolating sensitive optical components and preventing feedback in experimental configurations.
  • Test and Measurement Equipment
    Integrated into optical test benches to ensure accurate readings by blocking unwanted back-reflections.
  • Medical Laser Systems
    Protects medical laser sources from back-reflected light, ensuring safe and stable operation in diagnostic and therapeutic devices.
  • Quantum Optics and Quantum Communication
    Maintains the integrity of quantum signals by isolating quantum sources from environmental reflections.
  • Optical Instrumentation
    Used in spectrometers, interferometers, and other precision optical instruments to prevent feedback and enhance measurement fidelity.

Frequently Asked Questions

What is a Free Space Isolator for CWDM and what is its primary function?
A Free Space Isolator for CWDM (Coarse Wavelength Division Multiplexing) is an optical passive component designed to prevent back-reflected light from reaching sensitive optical devices, such as high-speed optical transmitters or pump lasers. Its primary function is to provide high isolation and low insertion loss, ensuring stable and efficient operation in optical communication systems.
What are the key features of DK Photonics Free Space Isolators?
DK Photonics Free Space Isolators offer high isolation, polarization dependence, an epoxy-free optical path option, compact size, versatile packaging, and support for multiple wavelengths. These features make them suitable for demanding applications in CWDM systems and laser diode packaging.
What wavelengths are supported by the DK Photonics Free Space Isolator for CWDM?
The DK Photonics Free Space Isolator supports a range of CWDM wavelengths, including 1470nm, 1490nm, 1510nm, 1530nm, 1550nm, 1570nm, 1590nm, and 1610nm. Custom wavelengths are also available upon request.
What is the difference between single stage and dual stage free space isolators?
Single stage isolators provide standard isolation and insertion loss performance, while dual stage isolators offer higher isolation levels, making them suitable for applications requiring maximum suppression of back-reflected light. Dual stage isolators are ideal for more demanding optical systems.
What is the typical insertion loss and isolation performance of these isolators?
For single stage isolators, the minimum isolation at the center wavelength is greater than 42 dB (P Grade) or 40 dB (A Grade), with insertion loss as low as 0.25 dB. Dual stage isolators offer even higher isolation, up to 55 dB (P Grade), with insertion loss as low as 0.35 dB.
Are DK Photonics Free Space Isolators Telcordia qualified?
Yes, DK Photonics Free Space Isolators are Telcordia GR-1221-CORE qualified, ensuring high reliability and compliance with industry standards for optical passive components.
What package sizes and customization options are available for these isolators?
DK Photonics offers a variety of package sizes, including Ø2.99×3.0mm, Ø2.99×2.8mm, Ø2.5×1.4mm, Ø2.5×2.0mm, Ø2.5×2.4mm, and Ø2.5×2.8mm. Customers can also specify custom sizes and request epoxy-free options for enhanced reliability in specific applications.

Got more questions? Use the inquiry form to ask the supplier directly.

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