OPTOKON

SFT 01x02 Singlemode Couplers

SFT 01x02 Singlemode Couplers

SFT-SWB    Wavelength Independent
SFT-S35    Dual Windows Wideband 
OPTOKON SFT-SWB wavelength independent couplers/splitters are designed to transmit optical signals within the full CWDM wavelength spectrum. With its innovative Fused Technology Process, the SFT series couplers have proven to provide exceptional characteristics for all applications demanding critical performance. These ultra reliable devices feature low backreflection, low insertion loss, and high port isolation over wide temperature and wavelength ranges. The SFT couplers are designed to divide and/or combine different optical signals in optical fiber systems. Splitting ratios can be customer specified between 1%:99% and 50%:50%. Various types of pigtailing and connector  terminations are available to meet your requirements. Available in a wide variety of packaging configurations The OPTOKON SFT-S35 dual windows wideband series are operable in both 1310 nm and 1550 nm wavelength range. 
 

  • Low insertion loss
  • High port isolation
  • Custom defined specifications
  • Environmentally stable
  • Wavelength independent - full CWDM spectrum

ITEM

Dual Window Wideband Couplers

Operating Wavelength, nm

S35:      1310 ± 40 and 1550 ± 80

SWB:     1250 – 1650 (CWDM wavelength range)

Typical Excess Loss, dB

0.2

Uniformity, dB (50:50)

0.8

Thermal Stability, dB (peak-peak)

< 0.2

PDL, dB (50:50 coupling ratio)

< 0.15

Port Configuration

1 x 2 or 2 x 2

Coupling Ratio

1:99 to 50:50, (50:50 standard)

Insertion Loss1), dB

Refer to the coupling ratio vs. Insertion loss chart

Directivity, dB

> 50

Return Loss, dB

> 50

Operating Temperature2), °C

-40 to +85

Storage Temperature2), °C

-50 to +85

WARNING

This product should never be installed in an optical network handling above Class I emissions

Note:    1) Without connectors
             2) Conditioned by the cable type

Block diagram:

 

Coupling Ratio vs. Insertion Loss:

Coupling Ratio PDL Conversation Chart:

Coupling Ratio (%)

Insertion Loss (dB)

Coupling Ratio (%)

PDL (dB)

50 / 50

3.6

> 40 %

0.15

40 / 60

4.8 / 2.7

30 to 39 %

0.20

33 / 67

5.7 / 2.2

10 to 29 %

0.30

30 / 70

6.2 / 1.9

1 to 9 %

0.35

20 / 80

8.3 / 1.3

 

 

10 / 90

11.7 / 0.7

 

 

5 / 95

15.2 / 0.4

 

 

1 / 99

23.3 / 0.2

 

 

Packaging variants:

SFT-SWB-01x02-50-BFS-NC-NC

SFT-S35-01x02-50-LTS-NC-NC

SFT-S35-01x02-50-CM1-NC-NC

SFT-S35-01x02-50-CM3-NC-NC

2x SFT-S35-01x02-50-RM-NE2-NE2

SFT-S35-01X02-WM-NE2-NE2

  • Telecommunications
  • Local area network
  • FTTH - PON
  • CATV
  • Testing instruments

SFT

-

XXX

-

01 x 02

-

XX

-

XXX

-

NC-NC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 grade

wavelength

 

 # port

 

 

 

 no input and output connectors3)

 S35 

1310/1550 nm

 

 01 x 02

 

 

 

 connector type - according to CON_14-01

 SWB1)

1250 - 1650 nm

  

 02 x 02

 

 

 

 

    (Jumper Ordering Code)

 

 

 

 

 

 

 

 

 

 

 

 coupling ratio

 

 basic packaging

 

 50

50/50

 

 BFS

 bare fiber 250 µm, tube L=54, Ø=3 mm

 

 40

40/60

 

 LTS

 Fiber 0.9 mm, tube L=54, Ø=3 mm

 

 30

30/70

 

 FM1

 fiber type, metal box 100x15x9 mm

 

 20

20/80

 

 CM1

 cable type, metal box 100x15x9 mm

 

 10

10/90

 

 FM3

 fiber type, metal box 100x80x10, stackable

 

 05

5/95

 

 CM3

 cable type, metal box 100x80x10, stackable

 

 01

1/99

 

 

 

 

other2)

 

additional packaging

 

 

 CAPM

 OPTOKON cassette

 

 

 SC

 splice cassette

 

 RM

 rack mounted unit (MCNP-1U)

 

 WM

 wall mounted box (MPIC-4)

Note:
1) ±0.3 dB tolerance
    (1370, 1390, 1410 nm IL increased for 0.2-0.3 dB)
2) please define
3) standard fiber/cable length = 1 m