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Home / Laser diode / VCSEL Laser Diode / 850nm SM Fiber coupled VCSEL Laser diode for 4.25Gbps High speed Communication

850nm SM Fiber coupled VCSEL Laser diode for 4.25Gbps High speed Communication

850 nm single-mode VCSELs are the perfect choice for demanding sensor applications due to their improved optical characteristics. Higher-order longitudinal and transversal modes are suppressed by the innovative chip design; at the same time, the polarization is linearly stable.

Name Price Operation
850nm SM Fiber coupled VCSEL Laser diode $1250.00
Features

● Low dependence of electrical and optical characteristics over temperature

● Data rates from OC-3 to OC-48

● Vertical Cavity Surface-Emitting Laser

● Internal TEC and Thermistor, ESD protection

● Narrow linewidth

● 2 nm tunability with TEC

E/O Characteristics

Condition:TO P = 20°C, IO P = 10.0 mA unless otherwise stated (TO P = chip backside temperature, controlled by the TEC)

Parameters

Symbol

Min

Typ

Max

Unit

Remark

Emission Wavelength

λR

850nm

Threshold current

ITH


1


mA


Output Power

Popt

0.5

1


mW


Threshold Voltage

UTH


1.8


V


Driving Current

IOP


3


mA

Popt =   0.5mW

Laser voltage

UOP


3


V

Popt = 0.5 mW

Electro optic conversion rate

ηWP


12


%

Popt =   0.5 mW

Slope efficiency

ηS


0.3


W/A


Rise and Fall time

Tr   /Tf


90/120


Psec


Differential series resistance

RS


100

200

Ω

Popt = 0.5 mW

3dB bandwidth

ν3dB

0.10

2.5


GHz

Popt =   0.5 mW

Due to   ESD protection diode

Relative intensity noise

RIN


-130

-120

dB/Hz

Popt = 0.3 mW @ 1   GHz

Wavelength tuning over current



0.6


nm/mA


Wavelength tuning over temperature



0.06


nm/K


Thermal resistance (VCSEL chip)

Rthermal

3


5

K/mW


Side mode supression


35



dB

I  = 2 mA

Beam divergence

θ

10


25

°

Popt =   0.5mW, full   width 1/e2

Spectral Width



100


MHz

Popt = 0.5 mW


Tec Characteristics

Unit

Min

Typ

Max

Remark

Tec   Current

mA

-150(Heating)


+300(Cooling)

Proper   Heart Sink Required

NTC Thermistor Resistance

9.5

10.0

10.5

T=25@10 KΩ

NTC Thermistor Resistance

10/exp{3892-(1/289K-I/TOP)}


Spectrum

850nm VCSEL single-mode-vcsel-spectrum_9871c314c3.jpg

L-I Curve(T@25°C)

850h2.png

Temperature / wavelength tuning over TEC current*

850h3.png


Beam profile

In the far field, the intensity distribution of the single-mode VCSEL is perfectly Gaussian shaped

850nm single mode vcsel beam profil.jpg

Package Size

850h4.png

Pin definition

TO package Bottom side View

850h5.png


Pin

Definitions

Pin

Definitions

1

TEC ( - )

5

TEC  ( + )

2

THERMISTOR ( + )

6

THERMISTOR

3

NA

7

NA

4

VCSEL   Cathode

8

VCSEL anode


Absolute Maximum Ratings

Item

Unit

Min

Typ

Max

Store Temperature

 

-40

25

125

Chip Temperature

+10

25

40

Operating Current

mA

0

3.0

5.0

Forward Voltage

V

0.8

3.0

4.8

TEC Current

mA

-150

-

+300

Soldering Temperature*

100

130

260

Electrical Power   Dissipation

mw

-

-

5

(*TEC temperature must be below 150°C)

Application

● Access network for long distance

● Local area network

● Gigabit Ethernet

OEM Info

PL-VCSEL-□□□□-☆-A8▽-XX

□□□□:Wavelength

0760:760nm

0850-850nm

*****

1550:1550nm

☆ :TEC

0:Without TEC

1:With TEC

▽:Wavelength Tolerance

1:±0.5nm

2:±1.5nm

XX: Fiber and Connector Type

FS=Free Space

BFSA=Butterfly Package with HI780+ FC/APC

CPSA=Coaxial Package with HI780+ FC/APC

BFSP=Butterfly Package with HI780+ FC/PC

CPSP=Coaxial Package with HI780+ FC/PC

BFPP=PM Fiber+ FC/PC

PA=PM Fiber+ FC/APC