EMCORE’s Model 1935 DFB lasers offer a low cost solution for linear fiber optic
links. These components can be cooled with external thermo-electric coolers for
high stability, or run without TEC’s to reduce power consumption. The DFB laser
builds upon Ortel’s long history of high performance, leading edge designs in
CATV, wireless, and high speed digital applications. The laser diode devices are
packaged in a compact hermetic assembly together with monitor photodiode and
isolator, for flexible integration into various transmitter configurations.
Performance Highlights
Parameters
Min
-40
3
5
Optical Output Power
(1)
Typical
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Max
85
4.9
5.9
8.9
9.9
11.9
4000
-
-57
-60
-65
-68
-
-
Units
C
Applications
Video Signal Distribution in HFC and
FTTx Nodes
Signal Distribution in L-Band and
Wireless Remoting Links
High Linearity, Low Power Fiber Links
Operating Case Temperature Range
6
9
10
dBm
Frequency Range
Carrier-to-Noise Ratio (79 channels)
(1)
(1)
5
51
-
-
-
-
45
(1)
MHz
dB
dBc
Features
Linear DFB Laser Design
Ouput Power Up to 10 dBm Available
Bandwidth 47 – 1002 MHz
RoHS Compliance
Optical Isolator
Low Power Consumption
Monitor Photodiode
Composite Second Order (79 channels)
Standard Linearity
Enhanced Linearity
Composite Triple Beat (79 channels)
(1)
Standard Linearity
Enhanced Linearity
Optical Return Loss
(1)
dBc
dB
dB
Side Mode Suppression Ratio, CW
30
1. Performance at Tcase = 25°C
| 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.
1935 F/R/W Coaxial DFB Laser Diode
O-Band CWDM 5 MHz – 4000 MHz
DATASHEET | AUGUST 2012
FIBER OPTICS
Absolute Maximum Ratings
1
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress
ratings only. Functional operation of the device is not implied at these or any other conditions in excess of those given in the
operational sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect
device reliability.
Parameters
Storage Temperature
Operating Case Temperature
Laser Diode Forward Current
Laser Diode Reverse Voltage
Photodiode Forward Current
Photodiode Reverse Voltage
Average RF Input Power
Lead Soldering Temperature/Time
Relative Humidity
ESD
Symbol
T
STG
T
OP
I
OP
V
R
I
MPD
V
MPD,R
PIN
-
RH
-
Condition/Notes
Non-Operating
Continuous
CW
Continuous
Continuous
Continuous
60 Seconds
-
Continuous
Human Body Model
Min
-40
-40
-
-
-
-
-
-
-
-500
Max
85
85
150
1.0
2
10
62
260/10
85
+500
Unit
o
o
C
C
mA
V
mA
V
dBmV
o
C/sec
%
V
1. Absolute maximum data are limited to system design only; proper device performance is not guaranteed over rating
listed above. Operation beyond these maximum conditions may degrade device performance, lead to device failure,
shorter lifetime, and will invalidate the device warranty.
Electrical/Optical Characteristics
Parameters
Optical Output Power
Symbol
Conditions/Notes
3 dBm Version
5 dBm Version
6 dBm Version
9 dBm Version
10 dBm Version
T
case
= 25ºC
T
case
= 45ºC
Min
3
5
6
9
10
-
-
-
Typ
-
-
-
-
-
8
13
-
1.17
-
-
4
-
-
-
Max
4.9
5.9
8.9
9.9
11.9
15
20
80
1.8
0.3
1.2
8
2000
50
-150
Unit
P
O
dBm
Threshold Current
Laser Bias Current
Forward Voltage
Slope Efficiency
Thermal Slope Efficiency
Laser Input Impedance
MPD Current
MPD Dark Current
Relative Intensity Noise
I
TH
I
OP
V
F
SE
TSE
Z
I
MPD
I
D
RIN
mA
mA
V
mW/mA
-
A
nA
dB/Hz
I
op
T
case
= 25ºC, I
op
SE(Tc)/SE(25ºC)
T
case
= -20ºC to 85ºC
-
V
MPD
= 5V, I
op
V
MPD
= 5V, I
op
= 0
T
case
= 25ºC
CW, I
op
,
T
case
= 25ºC
5 MHz - 1002 MHz
-
0.07
0.4
2
50
-
-
| 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.
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
Tracking Error
Optical Isolation, T
case
= 25ºC
Spectral Width (-20 dB)
Side Mode Suppression Ratio
Optical Return Loss
Symbol
ΔPf
ISO
SMSR
ORL
Conditions/Notes
I
MON
= const
ER = 10log(P
O
/2.0) [dB]
Double Isolator
I
op
I
op
T
case
= 25ºC
Min
-1
45
-
30
35
Typ
-
-
0.1
45
-
Max
+1
-
1.0
-
-
Unit
dB
dB
nm
dB
dB
1. Referenced to base of TO header.
Forward Path RF Characteristics
1935F Performance Parameter
Frequency Response Flatness
Response Up-tilt
1
2,3,4
2,3,4
1
Symbol
|S
21
|
Conditions/Notes
47 MHz – 1002 MHz
5 MHz – 4000 MHz
47 MHz < f < 1002 MHz
Min
-
-
-1
51
-
-
-
-
Typ
-
-
Max
1
4
3
Unit
dB
p-p
dB
dB
dBc
Carrier-to-Noise Ratio
CNR
Standard Linearity
Enhanced Linearity
CSO
I
op
I
op
T
case
= 25ºC
I
op
T
case
= 25ºC
-
-
-
-
-
-
-57
-60
-65
-68
Composite Second Order
Composite Triple Beat
2,3,4
Standard Linearity
Enhanced Linearity
CTB
dBc
1. I
op
, T
case
= 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. I
op
, T
case
= 25C. Test with the laser Input pin matched to a 75 system.
Return Path RF Characteristics
1935R Performance Parameters
Frequency Response Flatness
Second Order Distortion
Standard Linearity
Enhanced Linearity
2
2
1
Symbol
|S
21
|
Conditions/Notes
5 MHz - 200 MHz
P
F
= 3 dBm, OMI = 10% each
2-tone test: f1=7MHz, f2=56MHz
20 km of fiber
(7.5 dB total loss with connector) f1 + f2
P
F
= 3 dBm, OMI = 10% each
2-tone test: f1=7MHz, f2=56MHz
20 km of fiber
(7.5 dB total loss with connector) 2f2-f1
Min
-
Typ
-
Max
1
Unit
dB
p-p
DSO
-
-
-
-
-52
-58
dBc
Third Order Distortion
Standard Linearity
Enhanced Linearity
DTB
-
-
-
-
-63
-65
dBc
1. I
op
, T
case
= 25C. Test with the laser Input pin matched to a 50 system.
2. I
op
, T
case
= 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.
1935 F/R/W Coaxial DFB Laser Diode
O-Band CWDM 5 MHz – 4000 MHz
DATASHEET | AUGUST 2012
FIBER OPTICS
Wide Bandwidth Path RF Characteristics
1935W Performance Parameters
Frequency Response Flatness
Input Third Order Intercept
1dB Compression Point
3
2
1
Symbol
|S
21
|
IIP3
P
1dB
Conditions/Notes
900 MHz – 4000 MHz
Standard Linearity, I
bb
I
bb
Min
-
30
16
Typ
-
-
-
Max
4
-
-
Unit
dB
p-p
dBm
dBm
1. I
op
, T
case
= 25C. Test with the laser Input pin matched to a 50 system.
2. IIP3 is measured at I
bb
where I
bb
is the bias point at which simultaneously the laser at its best linearity and the optical
power is within specification. Test Frequency F1 = 2700MHz, F2 = 2703MHz, RF in = 0dBm/frequency. 0km fiber.
3. Test at 2700MHz. 0km fiber.
Package Outline Drawing (dimensions are in mm)
Mounting Bracket
| 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.
1935 F/R/W Coaxial DFB Laser Diode
O-Band CWDM 5 MHz – 4000 MHz
DATASHEET | AUGUST 2012
FIBER OPTICS
Reliability/Quality
Designed to meet qualification requirements of Telcordia
TM
(Bellcore) GR-468-CORE.
Schematic and Pinout
Schematic and Pinout A
3
PD
4
2
LD
1
Pin Definitions for Pinout A
Pin
1
2
3
4
Description
LD Anode, Case Ground
LD Cathode
PD Cathode
PD Anode
Pinout A
Bottom View
Laser Safety
This product meets the appropriate standard in Title 21 of the Code of Federal Regulations (CFR). FDA/CDRH Class 1 laser
product. This device has been classified with the FDA/CDRH under accession number 0220191.
All version of this laser are Class 1 laser product, tested according to IEC 60825-1:2007/EN 60825-1:2007
Single-mode fiber pigtail with SC/APC connectors (standard).
Wavelength = 1.3
m.
Maximum power = 50 mW.
Because of size constraints, laser safety labeling (including an FDA class 1 label) is not affixed to the module, but attached
to the outside of the shipping carton. Product is not shipped with power supply.
Caution: Use of controls, adjustments and procedures other than those specified herein may result in hazardous
laser radiation exposure.
| 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.
Summary of the four tests of the trial of Easy Power Supply I was quite busy at work some time ago and had no time for the trial. Now that the trial was about to end, I urgently took two days to do th...
[i=s] This post was last edited by paulhyde on 2014-9-15 03:19 [/i] It seems that small signals always appear, but it seems that it is difficult to figure out every time. I hope that those who are int...
I am a newbie... I made my own board (MSP430F6638), burned the marquee program into it, and it can run. But as long as it involves the clock initialization program, there will be problems. The program...
Recently I want to use MSP-FET430UIF to debug telosb nodes. It needs to be used under Linux system. However, after plugging in MSP-FET430, the dmesg information is printed as follows. It has been stuc...
BEIJING (May 7, 2014) – Texas Instruments Incorporated (TI) (NASDAQ: TXN) reported first quarter revenue of $2.98 billion, net income of $487 million and earnings per share of 44 cents. The results in...
The TIA Portal software's shift instructions shift the contents of an accumulator bit by bit to the left or right. The number of bits shifted is determined by N. A left shift of N bits multiplies t...[Details]
PV DC fuses are safety devices used to protect PV panels, inverters, and DC loads. To ensure their safety and reliability, they must be UL248 certified.
Before applying for UL248 certifi...[Details]
There are many different ways of human-computer interaction. The more common ones are listed below:
Mouse interaction: Using a mouse to operate a computer and interact was the most common human...[Details]
How do you know if a machine is operating properly? The answer: by leveraging deep learning to detect anomalies in routine vibration data from industrial machines. Anomaly detection has many uses, ...[Details]
Electric vehicles are currently gaining momentum, but this is just a facade. Fuel-powered vehicles remain unchallenged. While electric vehicles boast unique advantages in environmental emissions an...[Details]
As the number of cars increases, environmental pressures are also increasing. At this time, some people are saying that new energy vehicles are energy-efficient and environmentally friendly, and ar...[Details]
On August 25th, SK Hynix announced that it has completed development and entered mass production of its 321-layer, 2Tb QLC NAND flash memory product. This achievement marks the world's first applic...[Details]
On August 25th, Apple's expansion in India encountered new troubles. According to Bloomberg, Foxconn Technology Group has recalled approximately 300 Chinese engineers from India, further hindering ...[Details]
With the rapid advancement of automation technology, collaboration between robots is no longer just science fiction. Imagine dozens of machines moving goods in a warehouse without interfering with ...[Details]
On August 21, WeRide officially launched WePilot AiDrive, a one-stage end-to-end assisted driving solution developed in cooperation with Bosch. This comes only half a year after the two parties' "t...[Details]
As the scale and business applications of national e-government networks continue to expand, the data and services transmitted over them are becoming increasingly sensitive and critical. To protect...[Details]
Electric vehicles are now widespread, but they've brought with them a host of problems, the most prominent of which is charging. Small electric vehicles (EVs) are a new form of transportation in a ...[Details]
One of the most core components of electric vehicles is the motor. The power supply provides electrical energy to the motor, which converts this electrical energy into mechanical energy, which in t...[Details]
Normally, we determine our location and where we want to go by comparing our surroundings with observation and simple GPS tools. However, this kind of reasoning is very difficult for self-driving c...[Details]
With the continuous development of the industrial automation industry, we are seeing an increasing number of intelligent devices using flexible, efficient, and precise robotic arms to p...[Details]
Analogue and Mixed Signal
京公网安备 11010802033920号
EEWORLD
