1530nm 40mW DFB Fiber Coupled Laser

Product Overview-1530nm 40mW DFB Fiber Coupled Laser

The 1530nm 40mW DFB Fiber Coupled Laser (Model BFLD-1530-40SM-FA) is a high-performance distributed feedback laser diode designed for applications requiring stable, high-power single-mode optical output. Delivering a minimum of 40mW optical output power through single-mode fiber with FC/APC connector, this device features a built-in optical isolator to prevent back-reflection and ensure stable operation.

Housed in a 14-pin butterfly package with integrated thermoelectric cooler (TEC) and thermistor for precise wavelength and power stabilization, the laser offers excellent side-mode suppression ratio (≥35dB) and reliable performance across the operating temperature range. The OC-48 compatible pinout simplifies integration into existing system designs.

This laser is well-suited for optical testing systems, high-power optical systems, fiber optic sensing applications, and instrumentation requiring stable, high-power 1530nm laser sources.

Key Features-1530nm 40mW DFB Fiber Coupled Laser

· High optical output power: 40mW minimum, 50mW typical (SM fiber output)

· Center wavelength: 1530nm (range: 1527–1533nm)

· High side-mode suppression ratio (SMSR): ≥35dB

· Built-in optical isolator for back-reflection protection

· Single-mode fiber pigtail with FC/APC connector

· 14-pin butterfly package with integrated TEC and thermistor

· OC-48 pinout compatible for easy system integration

· Integrated monitor photodiode for power monitoring

· Precision wavelength and power stabilization via TEC control

· Low threshold current: 20mA typical

· Hermetic butterfly package for long-term reliability

Typical Applications-1530nm 40mW DFB Fiber Coupled Laser

· Optical testing and measurement systems

· Fiber optic sensing and distributed sensing applications

· Optical amplifier seed lasers and signal sources

· Wavelength division multiplexing (WDM) systems

· Optical communication test equipment

· Laboratory and research instrumentation

· Photonic component characterization and testing

· Optical spectrum analysis and measurement

· Industrial laser systems and OEM integration

Product Specifications-1530nm 40mW DFB Fiber Coupled Laser

Absolute Maximum Ratings

Electro-Optical Characteristics (T = 25°C, IF = IOP)

Package and Pin Definition-1530nm 40mW DFB Fiber Coupled Laser

Ordering Information-1530nm 40mW DFB Fiber Coupled Laser

Available Models

Note: Custom wavelengths within the C-band, alternative power levels, different fiber lengths, and connector options are available upon request. Contact our sales team for custom configuration pricing and lead time.

Why Choose Box Optronics DFB Lasers?

· Proven DFB laser chip technology with consistent wavelength and power specifications

· 100% functional testing and burn-in screening before shipment

· Competitive pricing with factory-direct supply

· Flexible order quantities — support for both R&D prototypes and volume production

· Customization options for wavelength, power, fiber length, connector, and pin configuration

· Long-term supply stability for production programs and system integration

· Hermetic butterfly packaging with integrated TEC for reliable operation

· International shipping via DHL/UPS/FedEx with full tracking

Frequently Asked Questions (FAQ)

Q: What is the difference between DFB and FP lasers?

A: DFB (Distributed Feedback) lasers incorporate a built-in grating structure that enables single longitudinal mode (SLM) operation with narrow linewidth and high side-mode suppression ratio (SMSR ≥35dB for this device). FP (Fabry-Perot) lasers typically operate with multiple longitudinal modes and have broader spectral output.

DFB lasers are preferred for applications requiring precise wavelength control and high stability, such as WDM systems, fiber sensing, and precision instrumentation, while FP lasers are typically used for cost-sensitive applications where strict wavelength control is less critical.

Q: Why is a built-in isolator important?

A: Back-reflections from fiber connections, optical components, or fiber ends can couple back into the laser diode, causing output power fluctuations, wavelength instability, and increased noise. The built-in optical isolator reduces optical feedback, helping maintain stable output power, wavelength stability, and low noise performance.

Q: What is the role of the TEC and thermistor?

A: The thermoelectric cooler (TEC) and thermistor work together to maintain the laser chip temperature through precise package temperature control. Since laser wavelength and output power are temperature-dependent, precise temperature control ensures stable performance across varying ambient conditions. The 10kΩ thermistor (B-value 3950K) provides temperature feedback to the TEC controller, which adjusts TEC current to maintain the set temperature. This is essential for applications requiring consistent wavelength and power.

Q: What does OC-48 pinout compatible mean?

A: OC-48 compatible pinout refers to a butterfly package pin assignment commonly adopted in OC-48 (2.5Gbps SONET/SDH) optical communication applications. This compatibility simplifies integration into systems using similar electrical and mechanical interfaces. Two pinout options (Type 1 and Type 2) are available to accommodate different system designs.

Q: What is the minimum order quantity (MOQ)?

A:The MOQ is 1pc.We support flexible order quantities. Standard models can be supplied in small quantities for R&D and prototyping, as well as larger volumes for production. Contact our sales team for specific pricing at your required quantity.

Q: Can I get a custom wavelength or power level?

A: Yes, we offer customization options including CWDM-compatible wavelengths and other customized wavelengths within the available range, alternative output power levels, custom fiber lengths, different connector types (FC/APC, FC/UPC, LC, etc.), and tailored pin configurations. Contact us with your specific requirements and our engineering team will review feasibility and provide a quotation.

Q: What drive current is needed to achieve 40mW output?

A: The typical operating current at 25°C is 200mA, with a maximum of 300mA. The threshold current is typically 20mA (14mA minimum, 50mA maximum). Actual operating current may vary between individual devices and with temperature. We recommend using a laser diode driver with appropriate current limiting and APC (Automatic Power Control) functionality for stable operation.

Q: Is the butterfly package hermetically sealed?

A: Yes, the 14-pin butterfly package is hermetically sealed, protecting the laser chip, isolator, and internal components from moisture, dust, and environmental contaminants. This ensures reliable long-term operation and is important for maintaining consistent performance over the product lifetime.

Datasheet and Testsheet-1530nm 40mW DFB Fiber Coupled Laser

datasheet

testsheet