Optoplex

TMCORPORATION

3374 Gateway BoulevardFremont, CA 94538, USA
Tel: (510) 490–9930
Fax: (510) 490–9330
URL: http://www.optoplex.com/
Email: sales@optoplex.com

Optical DPSK Demodulator
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 ratesof 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 DPSK device plays a keyrole in improving signal quality and performance to meet the expanding demand for higher data rates andmore 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 iscompact, athermal and polarization-independent. 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 witha high extinction ratio. Optoplex’s DPSK Demodulators can be configured to be fully tunable, semitunable or purely passive. Dual-Rate DPSK Demodulator is also available.

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

Key Features and Benefits• Athermal design• C+L band coverage by a single device• Low temperature-dependent frequency

shift (TDFS)
shift (PDFS)• Low insertion loss & PDL• High power handling• Passive (colorless & locked to ITUGrid) or tunable (to track laserfrequency)• Telcordia GR-1221 qualified

Transmittance (dB)

• Low polarization-dependent frequency
0-5-10-15-20-251564

1564.51565

1565.5

Wavelength (nm)T = 25C

T = 65C

T = -5C

1566

DPSK Demodulator Standard Product Datasheet1
Parameter

Unit

Wavelength Range (C-Band)
Wavelength Range (L-Band)
Free Spectral Range (FSR)1
FSR ErrorInsertion Loss2 (including twoconnectors)
Extinction Ratio2
PMD2
Return Loss
PDL2
PDFS2
TDFS2
Optical Path Delay2 (betweenthe two receiving ports)
Tuning Time Constant3
Tuning Range
Power Consumption
Tuning Voltage
Maximum Input Optical PowerOperating Temperature
Storage Temperature

nm
nm
GHz%
dB
dB
ps
dB
dB
deg
GHz
ps

Tunable10.7, 43, 50, 67<1Semi-Tunable

Passive

1527 ~ 1567
1567 ~ 1607
10.0, 12.5, 40, 50 or 66.67< 0.015
1.7 Typical; 2.2 Max> 18 for tunable; > 20 for passive< 0.1> 40< 0.2<3NA< 1.5<1.0secWVmWoCoC< 1.0~ 6.0> 1.5 FSR~ ±3 GHz
0.5 Typical; 1.0 Max
0~53000 ~ 70−40 ~ 85

Standard Package Dimensions(L×W×H) 4mm~39×26×11 for 10 ~ 12.5 GHz;
~26×24×9 for >40 GHz 5Connector TypeFiber Pigtail TypeFiber Pigtail LengthmNANANANA~51×30×18 for
10 or 12.5 GHz~25×25×11 for>40 GHz

TBD
SMF-28 with 900 μm loose tube
1.0 ± 0.1

Notes:
1. Only typical values are listed. Optoplex can provide devices with FSR ranging from 2.5 to 160 GHz.
2. Over the stated spectral and operating temperature ranges and all polarization states.
3. Defined as the time required to reach half-way from the starting and ending points.
4. Excluding two collimator sleeves extending out from the two adjacent sides by 21 mm with diameter of 8 mm.
5. Excluding two collimator sleeves extending out from one shorter side by 17 mm with diameter of 6.3 mm.
Optoplex Corporation, located in Fremont, California, is an ISO9001:2000 certified supplier of cutting-edge
photonic components and modules for dynamic wavelength management and signal conditioning. The company
designs, develops, manufactures, and markets innovative fiber-optic products to communications networks, andprovides customized solutions to instrument, defense, spectroscopy and sensing industries. By combining its
proprietary optical design and packaging technology with its state-of-the-art optical coating expertise and facility,
Optoplex supplies DPSK demodulators, DQPSK demodulators, 90° optical hybrids, 2-port tunable optical filters,
3-port reconfigurable optical add/drop multiplexers (ROADMs), optical interleavers, flat-top comb filters, opticalperformance monitors (OPMs), and portable spectrometers.