DenseLight DL-ASE is a series of all- semiconductor low DOP ASE optical sources with a wide selection of wavelengths, covering the entire telecom spectral bands (from O to U). The CW output standard model comes with excellent stability in output power and spectrum. As it operates on direct light generation from Superluminescent principle (SLED), it can be directly intensity modulated. Modulations are available upon request, as well as models to meet your specific needs.

Product Offering

Product Code
Center Wavelength
Power Density
Operation Mode
Spectral Symmetry (Gaussian)
Datasheet Enquiry Cart
DL-ASE-CW-CSO083A O 1310 nm 8 dBm CW Yes
DL-ASE-CW-CSE145A E 1450 nm 14 dBm -7.5 dBm/nm CW Yes
DL-ASE-CW-CSS145A S 1500 nm 13.5 dBm -7 dBm/nm CW Yes
DL-ASE-CW-CSC117A C 1550 nm 11 dBm -10 dBm/nm CW Yes
DL-ASE-CW-CSC107A C 1550 nm 10 dBm -11 dBm/nm IM Yes
DL-ASE-CW-CS5169A C 1550 nm 9 dBm -25 dBm/0.1nm CW Yes
DL-ASE-IM-CSC107A C 1580 nm 10 dBm -16 dBm/nm IM Yes
DL-ASE-CW-CSCL117A L 1580 nm 11 dBm -15 dBm/nm CW Yes
DL-ASE-CW-CSL155A L 1580 nm 15 dBm -10 dBm/nm CW Yes
DL-ASE-CW-CSU135A U 1680 nm 13 dBm -11 dBm/nm CW Yes

Features & Performance:

  • Wide spectral coverage, 1200nm-1700nm
  • Customised ASE design and spectrum  combination
    (e.g. return sensing signal  port, monitoring optical coupler, etc.)
  • CW operation (DL-ASE-CW-Series) or  Direct-modulation operation
    (DL-ASE-  IM-Series)
  • Fiber pigtail or FC receptacle output
  • Improved reliability by integrated optical  isolator
  • Remote optical power enabled function by active-low logic
  • Standard operating temperature: 0°C to  65°C.
  • Extended range -20°C to 70°C
  • Telcordia certification, RoHS Compliance










DL-ASE-IM Series

  • Over temperature protection and internal PCB temperature monitor
  • Pre-bias optical power
  • Analog intensity modulation up to 20MHz
  • Pulse or digital modulation up to 200MHz
  • Optical Output – FC Receptacle

DL-ASE-CW Series

  • Over temperature protection and internal PCB  temperature monitor
  • Active-Low optical power enabled function
  • Extendable Operating temperature up to 70 °C
  • Optical Output – SMF Fiber Pigtail Output















  • Structural Health Monitoring (SHM) – Sensing in gas & oil
  • Test & Measurement
  • Communications
    Affordable gigabit bandwidth fiber-link to homes and business (FTTX), test & measurement for telecom networks
  • Medical applications
    OCT (biopsies-less medical cell imaging, diagnostic imaging), point of use/ handhelds/ non-invasive diagnosis (blood analysis)
  • Energy, oil and gas
    Sensing in gas & oil production, telemetry in electricity distribution
  • Industrial controls
    In-line production process monitoring, 3D metrology and surface metrology, semiconductor fabrication (solar cells), chemical and gas sensing – safety, emission control, security
  • Environmental sensing
    Physical (temp, pressure, strain, vibrations), structural and civil engineering, smart structures, intelligent distributed sensing
  • Defense & security
    Perimeter defense, navigation and guidance – inertia sensing (gyroscope), infrared illumination for surveillance and speckle-free military imaging


Telcordia Quality Assured

DenseLight’s SLEDs successfully passed Telcordia’s GR-468-CORE “Reliability Assurance Requirements for Optoelectronics Devices Used in Telecommunications Equipment”

Passed 5000 hours accelerated-ageing and ripple-aging tests

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We are ready to lead you into the future of light no matter where your business operates.

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