High Power 1550 nm DFB's

Features

  • ITU grid wavelengths
  • Up to 100mW of output power
  • Low RIN
  • PM or SMF28 Fiber
  • Laser welded and hermetically sealed
  • Built in thermistor and monitor detector
  • Optional Bias-T

Applications

  • Long haul WDM transmission
  • RF Links
  • Seeding
  • Pulsing
  • Sensing
  • CATV

General Description

The EM4 high power distributed feedback laser (DFB) is a CW InGaAsP/InP multi-quantum well (MQW) laser diode. The module is ideal in applications where high power, low RIN and stable PM properties are needed. The module contains a cooler, thermistor and monitor detector. The module is designed and built using EM4s high reliability platform for defense components.


Optical And Electrical Characteristics

TOP=25°C, continous wave and beginning of life unless otherwise specified.  

Parameter Sym. Condition Min Typ. Max Unit
Operating Chip Temperature TCHIP  

20

 

35

°C

Threshold Current ITH  

 

50

 

mA

Laser Drive Current IOP  

 

375

500

mA

Laser Forward Voltage VF I= IMAX

 

 

3

V

Output Power POP 100mW Version, I=IOP

100

   

mW

80mW Version, I=IOP

80

   
63mW Version, I=IOP

63

   
50mW Version, I=IOP

50

   
40mW Version, I=IOP

40

   
Center Frequency FOPT P=POP See ordering information THz
Linewidth  Δν  

 

1

 

MHz

Relative Intensity Noise RIN P=POP, 0.2GHz→14GHz

 

 

-150

dB/Hz

Side Mode Suppression SMSR P=POP

30

 

 

dB

Optical Isolation ISO  

30

35

 

dB

Polarization Extinction Ratio PER  

17

21

 

dB

Monitor Photo Diode Current IPD  

100

 

 

 µA

Monitor Photo Diode Dark Current ID  

 

 

100

nA

Tracking Error    

-0.5

 

0.5

dB

TEC Current   TOP=70°C, P=POP, TCHIP=25°C

 

 

4.0

A

TEC Voltage   TOP=70°C, P=POP, TCHIP=25°C

 

 

4.0

V

Thermistor Resistance RTH T=25°C

9500

10000

10500

 Ω

Thermistor β coefficient  β 0 / 50°C

 

3892