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Directional Coupler

Directional Coupler
Directional Coupler
To electrical/optical engineers?

I am working with optical photonic fibers and I need to know: how much does a 3-db directional coupler cost? And a free-space delay line? If they are too expensive, is there any way I can use cheaper equipment to substitute them?

Why don't you make your own?

PCT 6d Directional Coupler tap PCT NGNII IT1S 06 QTY 25
PCT 6d Directional Coupler tap PCT NGNII IT1S 06 QTY 25
Paypal   US $38.00
CATV 7 way Directional Coupler Signal Coaxial Splitter
CATV 7 way Directional Coupler Signal Coaxial Splitter
Paypal   US $9.09
2 WAY ANTRONIX DIGITAL HIGH PERFORMANCE COAX DIRECTIONAL COUPLER CMCDT2106T NEW
2 WAY ANTRONIX DIGITAL HIGH PERFORMANCE COAX DIRECTIONAL COUPLER CMCDT2106T NEW
Paypal   US $6.29
10 PCS VIEWSONICS VS600DCW 18 DIRECTIONAL COUPLERS 18DB
10 PCS VIEWSONICS VS600DCW 18 DIRECTIONAL COUPLERS 18DB
Paypal   US $4.99
Regal L Type Directional Coupler – Model ZDRDCUV10 6 NIB
Regal L Type Directional Coupler – Model ZDRDCUV10 6 NIB
Paypal   US $5.99
CATV Cable TV 7 way Directional Coupler Signal Splitter
CATV Cable TV 7 way Directional Coupler Signal Splitter
Paypal   US $8.37
10 PCS VIEWSONICS VS600DCW 4 DIRECTIONAL COUPLERS 4DB
10 PCS VIEWSONICS VS600DCW 4 DIRECTIONAL COUPLERS 4DB
Paypal   US $2.99
Signal CATV Directional Coupler Splitter 2 Way Connect
Signal CATV Directional Coupler Splitter 2 Way Connect
Paypal   US $5.38
7 PCS VIEWSONICS VS600DCW 10 DIRECTIONAL COUPLERS 10DB
7 PCS VIEWSONICS VS600DCW 10 DIRECTIONAL COUPLERS 10DB
Paypal   US $2.99
1 in 2 out 3 Way CATV Signal Directional Coupler Splitter
1 in 2 out 3 Way CATV Signal Directional Coupler Splitter
Paypal   US $4.54
Tru Spec 4 Port Digital Directional Coupler High Performance tap
Tru Spec 4 Port Digital Directional Coupler High Performance tap
Paypal   US $6.00
T V CATV Directional 2 Way Signal Coupler Splitter
T V CATV Directional 2 Way Signal Coupler Splitter
Paypal   US $5.51
Antronix MGDCH 2116F Directional Coupler 1 Ghz 16db
Antronix MGDCH 2116F Directional Coupler 1 Ghz 16db
Paypal   US $29.99
Wholesale 25Holland 2 Port Directional Coupler1 Ghz 20 dBCable TV DCG2 20
Wholesale 25Holland 2 Port Directional Coupler1 Ghz 20 dBCable TV DCG2 20
Paypal   US $69.99
Wholesale 25Holland 2 Port Directional Coupler1 Ghz 30 dBCable TV DCG2 30
Wholesale 25Holland 2 Port Directional Coupler1 Ghz 30 dBCable TV DCG2 30
Paypal   US $69.99
Wholesale 25Holland 2 Port Directional Coupler1 Ghz 27 dBCable TV DCG2 27
Wholesale 25Holland 2 Port Directional Coupler1 Ghz 27 dBCable TV DCG2 27
Paypal   US $69.99
Wholesale 25Holland 2 Port Directional Coupler1 Ghz 16 dBCable TV DCG2 16
Wholesale 25Holland 2 Port Directional Coupler1 Ghz 16 dBCable TV DCG2 16
Paypal   US $69.99
Signal CATV Directional Coupler Splitter 3 Way Connect
Signal CATV Directional Coupler Splitter 3 Way Connect
Paypal   US $5.57
Wholesale 25Holland 2 Port Directional Coupler1 Ghz 12 dBCable TV DCG2 12
Wholesale 25Holland 2 Port Directional Coupler1 Ghz 12 dBCable TV DCG2 12
Paypal   US $69.99
New Antronix Coupler Directional Splitter 120dB 5 1002MHZ CMCDT2104L
New Antronix Coupler Directional Splitter 120dB 5 1002MHZ CMCDT2104L
Paypal   US $11.24
TONER TGDC 16 DIRECTIONAL COUPLER
TONER TGDC 16 DIRECTIONAL COUPLER
Paypal   US $35.00
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