For a high
optical quality fiber ends, or further need of coating on surfaces, or of accurate
mounting for precision alignment for collimating applications, a practical solution is to
glue the bare fiber to the core of an glass capillary. This provides a method of easy
handling, resulting in a better finish.
When propagating light in a change in the index of refraction, the light can be transmitted and/or reflected. The amount of transmission and reflection is determined by the optical properties of the two materials and the angle of incidence. There are several ways to take advantage of these effects.
When the reflected angle is 0
° there is about 3.5% (or 14.6dB) reflection light propagate backwards through the fiber with polished only surface. That means the return loss is only 14.6dB. The AR-coating will reduce the reflection to 0.1%(or return loss 30dB), and increase the transmission. In the reflected angle exceeds the core/cladding critical angle, the reflected light will not propagate backwards through the fiber, reducing backreflections. With an 8° angle polished pigtail fiber, the return loss is more than 65dB. The AR-coating is applied to increase the transmission. Larger wedge angle will give a higher return loss.Based on its renowned capability in optics, CASIX is now able to provide a series of high quality single- and dual-fiber tips with competitive price. These include single-fiber tips for collimators, isolators, switches, WDM, circulators, etc, and dual-fiber tips for WDM, hybrid isolators, compact circulators, etc. Our standard fiber tips are of 8
° angled with AR-coating at 1550nm or 1310nm. OEM parts with different wedge, coating, top flats as well as capillary length are welcome.
Singal Fiber Tip
Dual Fiber Tip ( I )
Dual Fiber Tip ( II )
Main Specifications:
Capillary Diameter |
1.8mm, 1.0mm |
Option Length |
4mm, 5mm, 6.5mm |
Option Wedge |
0° , 8° , 10° |
Wedge Tolerance |
± 0.5° |
Core Diameter |
127m m |
Option Fiber |
250m m (Corning SMF-28 single mode fiber) |
Fiber Length |
1.5m, 2m, 3m |
Scratch/Dig |
10/5 |
AR-coating |
<0.25% @center wavelength |
Order Informatiom:
Copyright 1998 CASIX, Inc. All rights reserved.
Last Revised: June 1, 1999
Web Page maintained by : Contact@CASIX.com
 |
 |
 |
 |
 |