10G DPSK Phase Demodulator P/N: DI-CAELCM003
C-Band, 10.7GHz FSR, Tunable
1. Introduction
Optoplex’s Optical DPSK Demodulator, also known as Delay Line Interferometer (DLI), converts phase modulation to amplitude modulation over the entire C+L band in support of data transmission rates of 2.5, 10 or 40 Gb/s. The DPSK demodulator is designed for phase modulated optical communication systems utilized in commercial, defense and space exploration markets. The device plays a key role in improving signal quality and performance to meet the expanding demand for higher data rates and more complex transmission formats within current and next generation systems without major capital expenditure. Optoplex’s DPSK Demodulator is based on a patented free-space optical design, which is compact, athermal and polarizationindependent. The measured frequency drift over temperature is only ~0.02 GHz/°C for our standard passive device. Further, this DPSK Demodulator exhibits a total polarization-dependent phase shift of less than 2 degrees over the entire operating temperature range with a high extinction ratio. Optoplex’s DPSK Demodulators can be configured to be fully tunable, colorless tunable or purely passive. DualRate DPSK Demodulator is also available.
Key Features and Benefits
· Athermal design
· C+L band coverage by a single device
· Low temperature-dependent frequency shift (TDFS)
· Low polarization-dependent frequency shift (PDFS)
· Low insertion loss & PDL
· High power handling
· Passive, colorless tunable (both aligned to ITU Grid) or fully tunable
· Telcordia GR-1221 qualified
Applications
·2.5, 10, 20 or 40 Gb/s commercial DPSK signal reception
· Customized data rate for advanced applications
· Data rate optimization
· Extend transmission distance
2. Absolute Maximum Rating
Table 1, Absolute maximum rating
Item
Parameter
Symbol
Condition
Min
Max
Unit
1
Storage temperature range
Tstg
-40
85
°C
2
Storage humidity
RHstg
Non Condensing
5
95
%
3
Maximal optical input power
Popt_max
Continuous wave
21
dBm
4
DLI tuning voltage
Vmax
DC voltage
6
V
5
Minimum bending radium of the fiber
R
SMF-28, or equivalent
15
mm
3. Operating Conditions
Table 2, Operating Conditions
Item
Parameter
Symbol
Condition
Min
Typ.
Max
Unit
1
Operating case temperature range
Tcase
-5
65
°C
2
Relative humidity range
RH
Long Term, noncondensing
5
90
%
3
Operating frequency range
f
C- Band
191.15
196.1
THz
4
DLI Tuning Voltage
V
DC
0
5
V
4. Optical Performance Specification
Table 3, optical performance specification
Item
Parameter
Unit
Specification
1
Wavelength Range (C-Band)
nm
1527 ~ 1567
2
Free Spectral Range1 (FSR)
GHz
10.7, or Customer Specific 3
3
FSR Error
%
< 1
4
Insertion Loss1 (including 2 connectors)
dB
2.2 Typical; 2.7 Max
5
Insertion Loss Difference1 (between two Output ports)
dB
< 0.7
6
Extinction Ratio1
dB
> 18
7
PMD1
ps
< 0.1
8
Return Loss
dB
> 40
9
PDL1
dB
< 0.2
10
PDFS1
deg
< 3
11
Optical Path Delay1 (between the 2 receiving ports)
ps
< 1.0
12
Tuning Time Constant2
sec
< 1.0
13
Tuning Range
FSR
> 1.5
14
Tuning Voltage Range
V
0 ~ 5
15
Tuning Power Consumption
W
0.5 Typical; 1.0 Max
Note:
1) Over the stated spectral and operating temperature ranges and all polarization states.
2) Defined as the time required to reach half-way from the starting and ending points.
3) Typical FSRs for 10Gbps application are 10, 10.24, 10.7, 11.4, 12.25, 12.5, or 13.375GHz. Custom-FSR is available. Please contact Optoplex for details.
5. Physical and Mechanical Specification
5.1 Device Dimension
Table 4, Device Dimensions
Parameter
Length
Width
Height
Unit
Value
39
26
12
mm
Note: 1. Not including the collimator sleeves extending in two adjacent sides. See the detailed drawing below.
5.2 Mechanical Drawing
5.3 Fiber and Connector
Table 5, Fiber and Connector Requirements
Item unit Description Connector Type - LC/UPC (or customer specific) Fiber Pigtail Type - SMF-28 with 900 μm loose tube Fiber Pigtail Length mm 1,000 ± 100
5.4 Port Definition and Labeling
Input——Flag-type label on fiber near connector. Content: IN.
Output —— Flag-type label on fiber near connector. Content: O1 and O2, respectively.
6. Electrical Specification
Table 6, Electrical Pin Definition
Pin Name Function 1 I+ Control the phase tuner. No parity. The driving voltage (0 ~ 5VDC) applied to Pin#1 and #2. 2 I- (See Figure 5 for Pin#1 and Pin#2 locations)
7. Product Label Requirements
7.1 Port label position and type—— Flag tape on pigtail near connector. Width of tape: ~3 mm.
7.2 Port label contents —— See Figure 5.
7.3 Device label—— On top, contains the following information:
a) Optoplex logo
b) Product description: DPSK Phase Demodulator, C-Band, 10.7 FSR, Tunable
c) Manufacturer P/N: DI – CAELCM003
d) Manufacturer S/N: (TBD)
Note: xx and nn are determined by customer’s selection; see Section 9, “Ordering Information”)
8. Quality and Reliability
RoHS 6 compliance
Telcordia 1221-CORE qualified
9. Ordering Information
商品属性 [波长] 1527 ~ 1567nm