PRELIMINARY DATASHEET| OCTOBER 3, 2007

Model 755MM-M Optical Transmitter

DWDM, 20 km, Low Distortion, Wideband

Emcore Model 755MM-M is a directly modulated (DM) DWDM optical

transmitter specifically designed for wideband applications that require

both CATV and DBS signals to be carried over up to 20 km of fiber. This

facilitates networks designs that may use a single transmitter to carry

multiple signals. The 755MM-M supports CATV + DBS transmission up

to 20 km.

The 755MM family of transmitter products is designed to support various

CATV transmitter applications with a common platform. A 75Ω CATV RF

video input supports frequencies up to 1002 MHz. Integrated within the

transmitter design are Emcore’s low chirp control, noise suppression

circuitry, and patented predistortion technology to provide outstanding

performance with any of Emcore’s wide range of cooled broadband

lasers. A second 50Ω RF input supports frequencies up to 2600 MHz for

FTTP, L-Band satellite, and wireless applications.

Performance Highlights

Features

Dual redundant power

supplies

SNMP network interface

Dual RF inputs for CATV and

DBS

Available on 100 GHz spaced

ITU DWDM C-band channels

Optimized RF integration of

predistorter, amplifiers, and

laser

Complete, efficient laser bias

and TEC control circuitry

OEM/ODM opportunities

available through Emcore

CNR

CSO

CTB

C/I (3

rd

order, 950 – 2200 MHz)

SBS Suppression Capability

Operating Temperature Range

Wavelength (100 GHz ITU Options)

Optical Power

Frequency Response (75Ω CATV Input)

(50Ω L-Band Input)

Min

0

1530

7

47

950

51

-

Typ

25

-

Max

50

1560

-

1002

2600

-

-60

-65

-60

17

Units

°C

nm

dBm

MHz

dB

dBc

dBm

Applications

Video signal distribution to

HFC CATV and FTTP nodes

Supports CATV, QAM, and

1527

DBS signal carriage

Replacement for externally

modulated transmitters

Noise and distortion performance above assumes 79 channel NTSC loading with no QAM, 0 dBm

received optical power, 0 and 20 km SMF-28 fiber or equivalent. See following pages for complete

specifications and operating/test conditions.

For more information on this and other products:

Contact Sales at Emcore 626-293-3400, or visit www.emcore.com.

Model 755MM-M Optical Transmitter

PRELIMINARY DATASHEET| OCTOBER 3, 2007

Absolute Maximum Ratings

Stresses in excess of the absolute maximum ratings can cause permanent damage to the transmitter. These are absolute stress ratings

only. Functional operation of the device is not implied or guaranteed 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.

Parameter

Storage Temperature (power off)

75Ω CATV RF Input Level (without L-Band input)

50Ω L-Band RF Input Level (without CATV input)

75Ω CATV RF Input Level (with +10 dBm L-Band input)

50Ω L-Band RF Input Level (with +1 dBm CATV input)

AC Input Range

AC Input Frequency Range

DC Input Range

Power Consumption

Symbol

T

stg

-

V

AC

f

AC

V

DC

P

Min

-40

-

94

50

36

-

Max

85

+3

+15

+1

+10

245

60

50

Unit

°C

dBm

V

AC

Hz

V

DC

W

Optical Characteristics

Parameter

Optical Output Power

SBS Threshold

Wavelength

Wavelength Stability

Wavelength Tolerance

Output Level Stability

Spectral Width (-20 dB)

Side Mode Suppression Ratio

Optical Isolation

Optical Return Loss

1

-

SMF-28, 20 km

-

100 GHz spacing

-

I

F

= I

OP

-

APC style connector

Condition

Min

7

-

-30

-0.4

-0.5

-

30

35

Typ

-

0.1

40

-

See ITU Channel Table

+30

+0.4

+0.5

1.0

-

Max

-

17

Unit

dBm

nm

pm

nm

dB

nm

dB

1. In order to prevent reflection-induced distortion, the laser must be connected to an optical cable having a return loss of at least 55 dB for discrete

reflections and 30 dB for distributed reflections.

EMCORE CORPORATION

2

Model 755MM-M Optical Transmitter

PRELIMINARY DATASHEET| OCTOBER 3, 2007

RF Characteristics

1

Parameter

Frequency Response Flatness

Input Impedance

C/I (3

rd

order)

52

75Ω Test Port Response Flatness

RF Test Point Level

75Ω Input RF Level

50Ω Input RF Level

75Ω CATV Video Input Return Loss

75Ω CATV Test Port Input Return Loss

50Ω L-band Input Return Loss

1.

Condition

75Ω input, 47 - 1002 MHz

50Ω input, 950 - 2600 MHz

CATV, 47 – 1002 MHz RF Input

L-Band, 950 – 2600 MHz RF Input

50Ω RF Input

Relative to 75Ω input

With –2.0 dBm total RF power into

75Ω input

79-channel loading, composite

Composite

47 to 1002 MHz

47 to 870 MHz

870 to 1002 MHz

950 to 2600 MHz

Min

-

-1

-20.5

-2.2

-0.5

16

14

10

Typ

-

75

50

-

-2.0

0.0

-

Max

1.5

3.5

-

-60

+1

-19.5

-1.8

+0.5

-

Unit

dB

p-p

Ohms

dBc

dB

dBm

dB

25°C ambient operation. Test receiver responsivity > 0.95 A/W at 1550 nm and equivalent noise current of 7 pA/√Hz. SMF-28 fiber, 0.25 dB/km

maximum loss, 1312 nm + 3 nm zero dispersion wavelength.

5.2.

Two –3 dBm/tone carriers, f

i

= 2000 MHz, f

2

= 2000.5 MHz, 50Ω input.

Channel Loading

RF Input

Level per

Channel

(dBmV)

27.83

27.83 (analog)

21.83 (QAM)

26.34

30.52

28.97

Composite

RF Input

Level (dBmV)

46.75

47.68

46.75

Composite

RF Input

Level (dBm)

-2.0

-1.066

-2.0

CNR

1,2,3

(dB)

51.0

49.0

48.5

52.0

CSO

1,3,4

(dBc)

-60

CTB

1,3,4

(dBc)

-65

BER

5

79 Channel NTSC

79 Channel NTSC + 75

Channel QAM-256 @ -6 dB

110 Channel NTSC

42 Channel CENELEC

60 Channel PAL

1.

2.

3.

4.

5.

-

10

-7

-

10 km transmitter option is tested through 0 km and 10 km SMF-28 fiber. 20 km transmitter option is tested through 0 km and 20 km SMF-28

fiber.

CNR may degrade up to 0.5 dB over the operating temperature range.

0 dBm optical power received.

CSO and CTB may degrade up to 1.5 dB over the operating temperature range.

Pre-FEC.

EMCORE CORPORATION

3

Model 755MM-M Optical Transmitter

PRELIMINARY DATASHEET| OCTOBER 3, 2007

Package Characteristics

Parameter

Height

Width

Depth

Weight

Dimension

1.75 (44), 1RU

19 (483)

17.77 (452) with fans

9.0 (4)

Unit

Inch (mm)

Pounds (kg)

ITU Channel Numbering

Channel

62

61

60

59

58

57

56

55

54

53

52

51

50

49

48

Wavelength

(nm)

1527.99

1528.77

1529.55

1530.33

1531.12

1531.90

1532.68

1533.47

1534.25

1535.04

1535.82

1536.61

1537.40

1538.19

1538.98

Channel

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

Wavelength

(nm)

1539.77

1540.56

1541.35

1542.14

1542.94

1543.73

1544.53

1545.32

1546.12

1546.92

1547.72

1548.51

1549.32

1550.12

1550.92

Channel

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

Wavelength

(nm)

1551.72

1552.52

1553.33

1554.13

1554.94

1555.75

1556.56

1557.36

1558.17

1558.98

1559.79

1560.61

1561.42

1562.23

1563.05

EMCORE CORPORATION

4

Model 755MM-M Optical Transmitter

PRELIMINARY DATASHEET| OCTOBER 3, 2007

Outline Drawing

Dimensions are in inches.

EMCORE CORPORATION

5

参数名称	属性值
厂商名称	EMCORE
Reach Compliance Code	unknown
其他特性	IT ALSO OPERATES WAVELENGTH FROM 1530NM TO 1560NM
主体宽度	483 mm
主体高度	44 mm
主体长度或直径	452 mm
内置特性	AMPLIFIER, TEC
连接类型	FC/APC CONNECTOR
发射极/检测器类型	LASER DIODE
光纤设备类型	TRANSMITTER
光纤类型	SMF
安装特点	PANEL MOUNT
最高工作温度	50 °C
最低工作温度
标称工作波长	1543 nm
标称光功率输出	5.011 mW
最小回损	35 dB
表面贴装	NO
传输类型	ANALOG
Base Number Matches	1

755MM-M-10-C-L-07-43-FC

755MM-M-10-C-L-07-43-FC概述

755MM-M-10-C-L-07-43-FC规格参数

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