The MT9812B is a mainframe supporting devices such as DFBLD multiple light sources and multi-channel device evaluation systems. A maximum of 9 MT9810B compatible light sources (DFB-LD, FP-LD, SLD) and optical sensor units can be inserted. In addition to being able to set and verify setting conditions for each unit on the front panel, a remotely controlled measurement system can be supported as GPIB and RS-232C interfaces are standard equipment. The unit incorporates a DFB-LD light source that supports D-WDM and complies with ITU-T. High Power of +10 dBm and high stability of better than or equal to ±0.005 dB are provided. In addition, high stability of better than or equal to ±2 GHz can be achieved for the center frequency. The center frequency of the light source can be varied in the maximum range of ±60 GHz (approx. ±0.5 nm). Moreover, the frequency can be displayed in either frequency or wavelength units. This function allows a required frequency to be set between reference grids.

DFB-LD light source module

 
MU952504A: Option 05 : 194.50THz / 1541.35nm

MU952504A:Option 10 : 195.00THz / 1537.40nm
MU952502A: Option 01 : 192.10THz / 1560.61nm

MU952502A: Option 05 : 192.50THz / 1557.36nm
MU952503A: Option 10 :  192.00THz / 1561.42nm 

The cards have the following specifications:

• Optical element: DFB-LD
• Applicable optical fiber: SM (ITU-T G.652)
• Specified wavelength: 1563.86 to 1530.33 nm (191.7 to 195.9 THz)
• Center optical frequency: fp ±0.01 THz (approx. ±0.08 nm)
• Spectrum half width: =30 MHz
• Optical output power: +10 ±1 dBm
• Optical power stability
  • Time stability (short term): =±0.005 dB
  • Time stability (long term): =±0.02 dB
  • Temperature stability: =±0.25 dB
• Center frequency stability
  • Time stability (short term): =±2 GHz (approx. ±0.02 nm)
  • Time stability (long term): =±4 GHz(approx. ±0.04 nm)
• Optical frequency tuning
  • Tuning range: fp ±60 GHz (approx. ±0.48 nm), Step: 1 GHz (approx. 0.01 nm)
  • Accuracy: =±10 GHz (setting to fp +60 GHz, or fp ¿60 GHz, 25°C)
• Internal modulation
  • Frequency: 270 Hz, 1 kHz, 2 kHz ±0.1%
  • Duty: 50% ±5%, Extinction ratio: =13 dB
• Optical output attenuation: 0.00 to 6.00 dB (0.01 dB steps), accuracy: =±0.5 dB (at 25°C when set to 6.00 dB)
• Optical connector: FC-PC
• Warm-up time: 1 h (after optical output on)