Nano Integrable Tunable Laser Assembly of C band     


LD-PD's Narrow Linewidth Tunable Laser is external-cavity-based, and compatible to OIF iTLA v1.3 electronics and I/O protocol. Leveraging unique technologies of Litecore epitaxial engineering and super luminescent diode which has been optimized for tunable lasers, the iTLA features of high power in polarization-maintained fiber, and Relative Intensity Noise lower than -145dB/Hz. Litecore iTLA is a best choice for Optical Coherent Communication (eg. for Silicon Photonics) acting as the external laser sources, and is also deployable in LiDAR for its high-power as well as wavelength tunability in a linear mode.



Product model


Name Model Price
Nano Integrable Tunable Laser Assembly of C band   [PDF]  [RFQ]

NITLA-C-17
(Stock NO. Not entered)
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Parameter



Physical/Optical Characteristics

Absolute Maximum Ratings and Environment Requirements

 The Nano-iTLA will be damaged beyond the following absolute maximum ratings.

Table 1 Absolute Maximum Ratings

#

Parameters

Symbol

Min

Typ

Max

Units

1

Storage Temperature (Case)

Tstg

-40


85

degC

2

Operating Temperature (Case)

Tc

-5


75

degC

3

Total Power Dissipation




3.7

W

4

Operating Relative Humidity

RH

5


85

%

5

Signal in PIN Voltage


-0.5


Vcc+0.3

V

6

Positive Supply Voltage

V3.3+

-0.3


3.6

V


Optical Specifications

The optical specification of Nano -iTLA is listed in Table 2.

Table 2 Optical Specifications

#

Parameters

Symbol

Min

Typ

Max

Units

7

Frequency

F

190.70


196.65

THz

8

Wavelength

λ

1524.50


1572.06

nm

9

Frequency Error (BOL)

ΔFBOL

-1.5


+1.5

GHz


Frequency Error (EOL)

ΔFEOL

-2.5


+2.5

GHz

10

Fiber Output Power   (over lifetime and   operating condition)

Pout

13


17

dBm

11

Output power variation across tuning range

ΔP



1

dB

12

Optical Power Accuracy (BOL)

PsBOL



+/-0.5

dB


Optical Power Accuracy (EOL)

PsEOL



+/-1.0

dB

13

Relative Intensity Noise

RIN



-145

dB/Hz

14

Side-Mode Suppression Ratio

SMSR

45



dB

15

Spectral Linewidth

δf



100

KHz

16

Optical Isolation

ISO

25



dB

17

Polarization Extinction Ratio over Tuning rang

PER

20



dB

18

Channel Space

f

0.1



GHz


Mechanical and Electrical Interface

The mechanical and electrical specifications are listed in Table 3. The Figure2 depicts the mechanical outline of Nano - iTLA. The pin assignment of electrical interface is shown in Table 4, and the following Table 5 details the pin function. The electrical characteristics compliant to the OIF MSA 1.3 are listed in Table 6.

Table 3 Mechanical and Electrical Specifications

#

Parameters

Specification

19

Mechanical Dimensions

25*15.6*5.65

20

Fiber Type

PANDA Fiber, or equivalents

21

Minimum Fiber Bend Radius

Equal or better than 5mm

22

Fiber Length

100+/-10cm

23

Connector

LC/UPC

24

Polarization Orientation

Parallel to slow axis

25

Electrical Interface

Molex 5054761010


pj2.png

Figure 2 Mechanical and Electrical Interface 


pj3.png 

Figure 3 3D-Model of Nano-iTLA 



Table 4 Pin Assignment

Pin#

Name

Names

Pin#

1

+3.3V Supply

NC

2

3

MS

RST

4

5

SRQ

TxD

6

7

DIS

RxD

8

9

GND

NC

10


Table 5 Pin Functions 

#

Pin Name

Pin#

Type

Description

26

+3.3V Supply

1

Power

+3.3V   Power Supply; tied together in Litecore iTLA

27

Ground

9

Power

Tied together in Litecore iTLA

28

DIS

7

LVTTL input Active Low

Disable laser output via Hardware control (i.e. bypass firmware) : Low = laser output   OFF

High = laser output controlled by protocol

29

SRQ

5

LVTTL output Active Low

Litecore to report a variety of conditions for service.

Low = SRQ is asserted and SRQ conditions can be read, cleared and re-configured by   host

30

MS

3

LVTTL input Low-to-high

low  to high  transition to reset  RS232  interface;    

i.e.,  clear input buffers and terminate current package.

31

TxD

6

LVTTL output

Transmit data from iTLA to a host

32

RxD

8

LVTTL input

Receivedata by iTLA from a host

33

RST

4

LVTTL input Active Low

When  low, laser  output  be disabled  and  iTLA  stays in  reset  (i.e. RS232 off)

(must remain high for laser to operate)


Table 6 Electrical Characteristics

#

Parameter

Symbol

Min

Typ.

Max

Unit

34

+3.3 Supply voltage

VCC

3.13

3.3

3.47

V

35

+3.3 Supply current

ICC

-


1500

mA (Peak1)

36

Power Dissipation(EOL)

PD



3.7

W

37

Input voltage, low

VIL

0.0


0.8

V

38

Input voltage, high

VIH

2.0


VCC

V

39

Output voltage, low

(IOL= 4 mA)

VOL

0.0


0.6

V

40

Output voltage, high

(IOH= -4 mA)

VOH

2.4


VCC

V

41

Power Supply noise

(for power supplied to the module )

(100Hz to 200MHz)




 1

%rms

42

RS-232 communication speed


9600

9600

115200

baud

1The instantaneous current cannot exceed 1.5 amps.


7  Timing and Warm-up Specifications

Table 7 Timing and Warm -Up

#

Parameters

Symbol

Min

Typ

Max

Units

43

Time   to light from LsEnable




1

Second

44

Channel/Frequency Tuning Time




30

Second

45

0.1GHz   Frequency-Step Fine Tuning Time

tF



1

Second

46

Power   Adjustment Time

tP



10

Second

47

Warm-up   till Freq & Power Locked

TWU



30

Second

48

Cold-up   till Freq & Power Locked

TCU



60

Second


8  Firmware Interface

The table 8 listed some of commands enabled. All the commands are compliant to the OIF MSA 1.3. Additionally, digital dither is not supported in the Litecore iTLA C band  

Table 8 Table of Registers (Commands)

#

Command

RegisterName

Read/Write

Non-volatile (NV)

Description

49

0x30

Channel

RW

NV

Setting valid channel causes a tuning

operation to occur. Also see the optional MHz resolution ChannelH register 0x65.

50

0x31

PWR

RW

NV

Sets the optical power set point as encoded as dBm*100.

51

0x32

ResEna

RW


Reset/Enable   - Enable output, hard and soft reset.

52

0x35

FCF1

RW

NV

Allows the first channel's frequency to be defined for channel numbering.

(THz)Also see the optional MHz resolution FCF3 register 0x67.

53

0x36

FCF2

RW

NV

Allows the first channel's frequency to be defined for channel numbering.

(GHz*10) Also see the optional MHz resolution FCF3 register 0x67.

54

0x37-0x3F

Reserved



Reserved for OIF configuration registers.

55

0x40

LF1

R


Returns channel's frequency as THz. Also see the optional MHz resolution LF3 register 0x68.

56

0x41

LF2

R


Returns channel's frequency as GHZ*10.  Also   see the optional MHz resolution LF3 register 0x68.

57

0x42

OOP

R


Returns   the optical power encoded as dBm*100.

58

0x43

CTemp

R


Returns the current temperature

(monitored by the temperature alarm) encoded as °C*100.

59

0x44-0x4E

Reserved



Reserved for OIF status registers.

60

0x4F

FTFR

R


Returns min/max fine tune frequency range (MHz).

61

0x50

OPSL

R


Returns themin possible optical power setting.

62

0x51

OPSH

R


Returns the max possible optical power setting.

63

0x52

LFL1

R


Laser's first frequency (THz). Also see the optional MHz resolution LFL3 register 0x69.

64

0x53

LFL2

R


Laser's first frequency (GHz*10). Also see the optional MHz resolution LFL3 register 0x69.

65

0x54

LFH1

R


Laser's last frequency (THz). Also see the optional MHz resolution LFH3 register 0x6A.

66

0x55

LFH2

R


Laser's last frequency (GHz*10). Also see the optional MHz resolution LFH3 register 0x6A.

67

0x56

LGrid

R


Laser's minimum supported grid spacing (GHz*10). Also see the optional MHz resolution LGrid2 register 0x6B.




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