1935 F/R/W Coaxial DFB Laser Diode
O-Band CWDM 5 MHz – 4000 MHz
DATASHEET | AUGUST 2012
FIBER OPTICS
Electrical/Optical Characteristics (continued)
Parameters
Symbol
Conditions/Notes
Min
Typ
Max
Unit
IMON = const
ER = 10log(PO/2.0) [dB]
Tracking Error
ΔPf
-1
-
+1
dB
Optical Isolation, Tcase = 25ºC
Spectral Width (-20 dB)
ISO
Double Isolator
45
-
-
0.1
45
-
-
1.0
-
dB
nm
dB
dB
Iop
Iop
Side Mode Suppression Ratio
Optical Return Loss
SMSR
ORL
30
35
Tcase = 25ºC
-
1. Referenced to base of TO header.
Forward Path RF Characteristics
1935F Performance Parameter
Frequency Response Flatness 1
Response Up-tilt 1
Symbol
Conditions/Notes
Min
Typ
Max
Unit
47 MHz – 1002 MHz
5 MHz – 4000 MHz
-
-
-
-
1
4
|S21|
dBp-p
47 MHz < f < 1002 MHz
Iop
-1
3
-
dB
dB
Carrier-to-Noise Ratio 2,3,4
Composite Second Order 2,3,4
CNR
CSO
51
-
Iop
Standard Linearity
-
-
-
-
-57
-60
dBc
dBc
Tcase = 25ºC
Enhanced Linearity
Composite Triple Beat 2,3,4
Iop
Standard Linearity
Enhanced Linearity
CTB
-
-
-
-
-65
-68
Tcase = 25ºC
1. Iop, Tcase = 25C. Test with the laser Input pin matched to a 50 system.
2. 3.7% OMI, 79 NTSC unmodulated carriers (50 MHz to 550 MHz). 10 km fiber.
3. Received power = 0 dBm.
4. Iop, Tcase = 25C. Test with the laser Input pin matched to a 75 system.
Return Path RF Characteristics
1935R Performance Parameters
Symbol
Conditions/Notes
Min
Typ
Max
Unit
Frequency Response Flatness 1
|S21|
5 MHz - 200 MHz
-
-
1
dBp-p
PF = 3 dBm, OMI = 10% each
2-tone test: f1=7MHz, f2=56MHz
20 km of fiber
Second Order Distortion 2
Standard Linearity
Enhanced Linearity
DSO
-
-
-
-
-52
-58
dBc
dBc
(7.5 dB total loss with connector) f1 + f2
PF = 3 dBm, OMI = 10% each
2-tone test: f1=7MHz, f2=56MHz
20 km of fiber
Third Order Distortion 2
Standard Linearity
Enhanced Linearity
DTB
-
-
-
-
-63
-65
(7.5 dB total loss with connector) 2f2-f1
1. Iop, Tcase = 25C. Test with the laser Input pin matched to a 50 system.
2. Iop, Tcase = 25C. Test with laser input pin matched to a 75 system.
|
REV 2012.08
Information contained herein is deemed reliable and accurate as of the issue date. EMCORE reserves the right to change the design or specification at any time without notice.
EMCORE [ EMCORE CORPORATION ]
